Read, manipulate and write spreadsheet data and styles to XLSX and JSON.
Reverse engineered from Excel spreadsheet files as a project.
npm install devextreme-exceljs-fork
Contributions are very welcome! It helps me know what features are desired or what bugs are causing the most pain.
I have just one request; If you submit a pull request for a bugfix, please add a unit-test or integration-test (in the spec folder) that catches the problem. Even a PR that just has a failing test is fine - I can analyse what the test is doing and fix the code from that.
Note: Please try to avoid modifying the package version in a PR. Versions are updated on release and any change will most likely result in merge collisions.
To be clear, all contributions added to this library will be included in the library's MIT licence.
const ExcelJS = require('exceljs');
To use the ES5 transpiled code, for example for node.js versions older than 10, use the dist/es5 path.
const ExcelJS = require('exceljs/dist/es5');
Note: The ES5 build has an implicit dependency on a number of polyfills which are no longer explicitly added by exceljs. You will need to add "core-js" and "regenerator-runtime" to your dependencies and include the following requires in your code before the exceljs import:
// polyfills required by exceljs
require('core-js/modules/es.promise');
require('core-js/modules/es.string.includes');
require('core-js/modules/es.object.assign');
require('core-js/modules/es.object.keys');
require('core-js/modules/es.symbol');
require('core-js/modules/es.symbol.async-iterator');
require('regenerator-runtime/runtime');
const ExcelJS = require('exceljs/dist/es5');
For IE 11, you'll also need a polyfill to support unicode regex patterns. For example,
const rewritePattern = require('regexpu-core');
const {generateRegexpuOptions} = require('@babel/helper-create-regexp-features-plugin/lib/util');
const {RegExp} = global;
try {
new RegExp('a', 'u');
} catch (err) {
global.RegExp = function(pattern, flags) {
if (flags && flags.includes('u')) {
return new RegExp(rewritePattern(pattern, flags, generateRegexpuOptions({flags, pattern})));
}
return new RegExp(pattern, flags);
};
global.RegExp.prototype = RegExp.prototype;
}
ExcelJS publishes two browserified bundles inside the dist/ folder:
One with implicit dependencies on core-js polyfills...
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.js"></script> <script src="exceljs.js"></script>
And one without...
<script src="--your-project's-pollyfills-here--"></script> <script src="exceljs.bare.js"></script>
const workbook = new ExcelJS.Workbook();
workbook.creator = 'Me'; workbook.lastModifiedBy = 'Her'; workbook.created = new Date(1985, 8, 30); workbook.modified = new Date(); workbook.lastPrinted = new Date(2016, 9, 27);
// Set workbook dates to 1904 date system workbook.properties.date1904 = true;Set Calculation Properties⬆
// Force workbook calculation on load workbook.calcProperties.fullCalcOnLoad = true;
The Workbook views controls how many separate windows Excel will open when viewing the workbook.
workbook.views = [
{
x: 0, y: 0, width: 10000, height: 20000,
firstSheet: 0, activeTab: 1, visibility: 'visible'
}
]
const sheet = workbook.addWorksheet('My Sheet');
Use the second parameter of the addWorksheet function to specify options for the worksheet.
For Example:
// create a sheet with red tab colour
const sheet = workbook.addWorksheet('My Sheet', {properties:{tabColor:{argb:'FFC0000'}}});
// create a sheet where the grid lines are hidden
const sheet = workbook.addWorksheet('My Sheet', {views: [{showGridLines: false}]});
// create a sheet with the first row and column frozen
const sheet = workbook.addWorksheet('My Sheet', {views:[{state: 'frozen', xSplit: 1, ySplit:1}]});
// Create worksheets with headers and footers
const sheet = workbook.addWorksheet('My Sheet', {
headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}
});
// create new sheet with pageSetup settings for A4 - landscape
const worksheet = workbook.addWorksheet('My Sheet', {
pageSetup:{paperSize: 9, orientation:'landscape'}
});
Use the worksheet id to remove the sheet from workbook.
For Example:
// Create a worksheet
const sheet = workbook.addWorksheet('My Sheet');
// Remove the worksheet using worksheet id
workbook.removeWorksheet(sheet.id)
// Iterate over all sheets
// Note: workbook.worksheets.forEach will still work but this is better
workbook.eachSheet(function(worksheet, sheetId) {
// ...
});
// fetch sheet by name
const worksheet = workbook.getWorksheet('My Sheet');
// fetch sheet by id
// INFO: Be careful when using it!
// It tries to access to `worksheet.id` field. Sometimes (really very often) workbook has worksheets with id not starting from 1.
// For instance It happens when any worksheet has been deleted.
// It's much more safety when you assume that ids are random. And stop to use this function.
// If you need to access all worksheets in a loop please look to the next example.
const worksheet = workbook.getWorksheet(1);
// access by `worksheets` array:
workbook.worksheets[0]; //the first one;
It's important to know that workbook.getWorksheet(1) != Workbook.worksheets[0] and workbook.getWorksheet(1) != Workbook.worksheets[1], because workbook.worksheets[0].id may have any value.
// make worksheet visible worksheet.state = 'visible'; // make worksheet hidden worksheet.state = 'hidden'; // make worksheet hidden from 'hide/unhide' dialog worksheet.state = 'veryHidden';
Worksheets support a property bucket to allow control over some features of the worksheet.
// create new sheet with properties
const worksheet = workbook.addWorksheet('sheet', {properties:{tabColor:{argb:'FF00FF00'}}});
// create a new sheet writer with properties
const worksheetWriter = workbookWriter.addWorksheet('sheet', {properties:{outlineLevelCol:1}});
// adjust properties afterwards (not supported by worksheet-writer)
worksheet.properties.outlineLevelCol = 2;
worksheet.properties.defaultRowHeight = 15;
Supported Properties
Name Default Description tabColor undefined Color of the tabs outlineLevelCol 0 The worksheet column outline level outlineLevelRow 0 The worksheet row outline level defaultRowHeight 15 Default row height defaultColWidth (optional) Default column width dyDescent 55 TBDSome new metrics have been added to Worksheet...
Name Description rowCount The total row size of the document. Equal to the row number of the last row that has values. actualRowCount A count of the number of rows that have values. If a mid-document row is empty, it will not be included in the count. columnCount The total column size of the document. Equal to the maximum cell count from all of the rows actualColumnCount A count of the number of columns that have values.All properties that can affect the printing of a sheet are held in a pageSetup object on the sheet.
// create new sheet with pageSetup settings for A4 - landscape
const worksheet = workbook.addWorksheet('sheet', {
pageSetup:{paperSize: 9, orientation:'landscape'}
});
// create a new sheet writer with pageSetup settings for fit-to-page
const worksheetWriter = workbookWriter.addWorksheet('sheet', {
pageSetup:{fitToPage: true, fitToHeight: 5, fitToWidth: 7}
});
// adjust pageSetup settings afterwards
worksheet.pageSetup.margins = {
left: 0.7, right: 0.7,
top: 0.75, bottom: 0.75,
header: 0.3, footer: 0.3
};
// Set Print Area for a sheet
worksheet.pageSetup.printArea = 'A1:G20';
// Set multiple Print Areas by separating print areas with '&&'
worksheet.pageSetup.printArea = 'A1:G10&&A11:G20';
// Repeat specific rows on every printed page
worksheet.pageSetup.printTitlesRow = '1:3';
// Repeat specific columns on every printed page
worksheet.pageSetup.printTitlesColumn = 'A:C';
Supported pageSetup settings
Name Default Description margins Whitespace on the borders of the page. Units are inches. orientation 'portrait' Orientation of the page - i.e. taller (portrait) or wider (landscape) horizontalDpi 4294967295 Horizontal Dots per Inch. Default value is -1 verticalDpi 4294967295 Vertical Dots per Inch. Default value is -1 fitToPage Whether to use fitToWidth and fitToHeight or scale settings. Default is based on presence of these settings in the pageSetup object - if both are present, scale wins (i.e. default will be false) pageOrder 'downThenOver' Which order to print the pages - one of ['downThenOver', 'overThenDown'] blackAndWhite false Print without colour draft false Print with less quality (and ink) cellComments 'None' Where to place comments - one of ['atEnd', 'asDisplayed', 'None'] errors 'displayed' Where to show errors - one of ['dash', 'blank', 'NA', 'displayed'] scale 100 Percentage value to increase or reduce the size of the print. Active when fitToPage is false fitToWidth 1 How many pages wide the sheet should print on to. Active when fitToPage is true fitToHeight 1 How many pages high the sheet should print on to. Active when fitToPage is true paperSize What paper size to use (see below) showRowColHeaders false Whether to show the row numbers and column letters showGridLines false Whether to show grid lines firstPageNumber Which number to use for the first page horizontalCentered false Whether to center the sheet data horizontally verticalCentered false Whether to center the sheet data verticallyExample Paper Sizes
Name Value Letter undefined Legal 5 Executive 7 A3 8 A4 9 A5 11 B5 (JIS) 13 Envelope #10 20 Envelope DL 27 Envelope C5 28 Envelope B5 34 Envelope Monarch 37 Double Japan Postcard Rotated 82 16K 197x273 mm 119Here's how to add headers and footers. The added content is mainly text, such as time, introduction, file information, etc., and you can set the style of the text. In addition, you can set different texts for the first page and even page.
Note: Images are not currently supported.
// Create worksheets with headers and footers
var sheet = workbook.addWorksheet('sheet', {
headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}
});
// Create worksheets with headers and footers
var worksheetWriter = workbookWriter.addWorksheet('sheet', {
headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}
});
// Set footer (default centered), result: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "Page &P of &N";
// Set the footer (default centered) to bold, resulting in: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "Page &P of &N";
// Set the left footer to 18px and italicize. Result: "Page 2 of 16"
worksheet.headerFooter.oddFooter = "&LPage &P of &N";
// Set the middle header to gray Aril, the result: "52 exceljs"
worksheet.headerFooter.oddHeader = "&C&KCCCCCC&\"Aril\"52 exceljs";
// Set the left, center, and right text of the footer. Result: “Exceljs” in the footer left. “demo.xlsx” in the footer center. “Page 2” in the footer right
worksheet.headerFooter.oddFooter = "&Lexceljs&C&F&RPage &P";
// Add different header & footer for the first page
worksheet.headerFooter.differentFirst = true;
worksheet.headerFooter.firstHeader = "Hello Exceljs";
worksheet.headerFooter.firstFooter = "Hello World"
Supported headerFooter settings
Name Default Description differentFirst false Set the value of differentFirst as true, which indicates that headers/footers for first page are different from the other pages differentOddEven false Set the value of differentOddEven as true, which indicates that headers/footers for odd and even pages are different oddHeader null Set header string for odd(default) pages, could format the string oddFooter null Set footer string for odd(default) pages, could format the string evenHeader null Set header string for even pages, could format the string evenFooter null Set footer string for even pages, could format the string firstHeader null Set header string for the first page, could format the string firstFooter null Set footer string for the first page, could format the stringScript Commands
Commands Description &L Set position to the left &C Set position to the center &R Set position to the right &P The current page number &N The total number of pages &D The current date &T The current time &G A picture &A The worksheet name &F The file name &B Make text bold &I Italicize text &U Underline text &"font name" font name, for example &"Aril" &font size font size, for example 12 &KHEXCode font color, for example &KCCCCCCWorksheets now support a list of views, that control how Excel presents the sheet:
Each view also supports various properties:
Name Default Description state 'normal' Controls the view state - one of normal, frozen or split rightToLeft false Sets the worksheet view's orientation to right-to-left activeCell undefined The currently selected cell showRuler true Shows or hides the ruler in Page Layout showRowColHeaders true Shows or hides the row and column headers (e.g. A1, B1 at the top and 1,2,3 on the left showGridLines true Shows or hides the gridlines (shown for cells where borders have not been defined) zoomScale 100 Percentage zoom to use for the view zoomScaleNormal 100 Normal zoom for the view style undefined Presentation style - one of pageBreakPreview or pageLayout. Note pageLayout is not compatible with frozen viewsFrozen views support the following extra properties:
Name Default Description xSplit 0 How many columns to freeze. To freeze rows only, set this to 0 or undefined ySplit 0 How many rows to freeze. To freeze columns only, set this to 0 or undefined topLeftCell special Which cell will be top-left in the bottom-right pane. Note: cannot be a frozen cell. Defaults to first unfrozen cellworksheet.views = [
{state: 'frozen', xSplit: 2, ySplit: 3, topLeftCell: 'G10', activeCell: 'A1'}
];
Split views support the following extra properties:
Name Default Description xSplit 0 How many points from the left to place the splitter. To split vertically, set this to 0 or undefined ySplit 0 How many points from the top to place the splitter. To split horizontally, set this to 0 or undefined topLeftCell undefined Which cell will be top-left in the bottom-right pane. activePane undefined Which pane will be active - one of topLeft, topRight, bottomLeft and bottomRightworksheet.views = [
{state: 'split', xSplit: 2000, ySplit: 3000, topLeftCell: 'G10', activeCell: 'A1'}
];
It is possible to apply an auto filter to your worksheet.
worksheet.autoFilter = 'A1:C1';
While the range string is the standard form of the autoFilter, the worksheet will also support the following values:
// Set an auto filter from A1 to C1
worksheet.autoFilter = {
from: 'A1',
to: 'C1',
}
// Set an auto filter from the cell in row 3 and column 1
// to the cell in row 5 and column 12
worksheet.autoFilter = {
from: {
row: 3,
column: 1
},
to: {
row: 5,
column: 12
}
}
// Set an auto filter from D3 to the
// cell in row 7 and column 5
worksheet.autoFilter = {
from: 'D3',
to: {
row: 7,
column: 5
}
}
// Add column headers and define column keys and widths
// Note: these column structures are a workbook-building convenience only,
// apart from the column width, they will not be fully persisted.
worksheet.columns = [
{ header: 'Id', key: 'id', width: 10 },
{ header: 'Name', key: 'name', width: 32 },
{ header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }
];
// Access an individual columns by key, letter and 1-based column number
const idCol = worksheet.getColumn('id');
const nameCol = worksheet.getColumn('B');
const dobCol = worksheet.getColumn(3);
// set column properties
// Note: will overwrite cell value C1
dobCol.header = 'Date of Birth';
// Note: this will overwrite cell values C1:C2
dobCol.header = ['Date of Birth', 'A.K.A. D.O.B.'];
// from this point on, this column will be indexed by 'dob' and not 'DOB'
dobCol.key = 'dob';
dobCol.width = 15;
// Hide the column if you'd like
dobCol.hidden = true;
// set an outline level for columns
worksheet.getColumn(4).outlineLevel = 0;
worksheet.getColumn(5).outlineLevel = 1;
// columns support a readonly field to indicate the collapsed state based on outlineLevel
expect(worksheet.getColumn(4).collapsed).to.equal(false);
expect(worksheet.getColumn(5).collapsed).to.equal(true);
// iterate over all current cells in this column
dobCol.eachCell(function(cell, rowNumber) {
// ...
});
// iterate over all current cells in this column including empty cells
dobCol.eachCell({ includeEmpty: true }, function(cell, rowNumber) {
// ...
});
// add a column of new values
worksheet.getColumn(6).values = [1,2,3,4,5];
// add a sparse column of values
worksheet.getColumn(7).values = [,,2,3,,5,,7,,,,11];
// cut one or more columns (columns to the right are shifted left)
// If column properties have been defined, they will be cut or moved accordingly
// Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
worksheet.spliceColumns(3,2);
// remove one column and insert two more.
// Note: columns 4 and above will be shifted right by 1 column.
// Also: If the worksheet has more rows than values in the column inserts,
// the rows will still be shifted as if the values existed
const newCol3Values = [1,2,3,4,5];
const newCol4Values = ['one', 'two', 'three', 'four', 'five'];
worksheet.spliceColumns(3, 1, newCol3Values, newCol4Values);
// Get a row object. If it doesn't already exist, a new empty one will be returned
const row = worksheet.getRow(5);
// Get multiple row objects. If it doesn't already exist, new empty ones will be returned
const rows = worksheet.getRows(5, 2); // start, length (>0, else undefined is returned)
// Get the last editable row in a worksheet (or undefined if there are none)
const row = worksheet.lastRow;
// Set a specific row height
row.height = 42.5;
// make row hidden
row.hidden = true;
// set an outline level for rows
worksheet.getRow(4).outlineLevel = 0;
worksheet.getRow(5).outlineLevel = 1;
// rows support a readonly field to indicate the collapsed state based on outlineLevel
expect(worksheet.getRow(4).collapsed).to.equal(false);
expect(worksheet.getRow(5).collapsed).to.equal(true);
row.getCell(1).value = 5; // A5's value set to 5
row.getCell('name').value = 'Zeb'; // B5's value set to 'Zeb' - assuming column 2 is still keyed by name
row.getCell('C').value = new Date(); // C5's value set to now
// Get a row as a sparse array
// Note: interface change: worksheet.getRow(4) ==> worksheet.getRow(4).values
row = worksheet.getRow(4).values;
expect(row[5]).toEqual('Kyle');
// assign row values by contiguous array (where array element 0 has a value)
row.values = [1,2,3];
expect(row.getCell(1).value).toEqual(1);
expect(row.getCell(2).value).toEqual(2);
expect(row.getCell(3).value).toEqual(3);
// assign row values by sparse array (where array element 0 is undefined)
const values = []
values[5] = 7;
values[10] = 'Hello, World!';
row.values = values;
expect(row.getCell(1).value).toBeNull();
expect(row.getCell(5).value).toEqual(7);
expect(row.getCell(10).value).toEqual('Hello, World!');
// assign row values by object, using column keys
row.values = {
id: 13,
name: 'Thing 1',
dob: new Date()
};
// Insert a page break below the row
row.addPageBreak();
// Iterate over all rows that have values in a worksheet
worksheet.eachRow(function(row, rowNumber) {
console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));
});
// Iterate over all rows (including empty rows) in a worksheet
worksheet.eachRow({ includeEmpty: true }, function(row, rowNumber) {
console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));
});
// Iterate over all non-null cells in a row
row.eachCell(function(cell, colNumber) {
console.log('Cell ' + colNumber + ' = ' + cell.value);
});
// Iterate over all cells in a row (including empty cells)
row.eachCell({ includeEmpty: true }, function(cell, colNumber) {
console.log('Cell ' + colNumber + ' = ' + cell.value);
});
// Commit a completed row to stream
row.commit();
// row metrics
const rowSize = row.cellCount;
const numValues = row.actualCellCount;
// Add a couple of Rows by key-value, after the last current row, using the column keys
worksheet.addRow({id: 1, name: 'John Doe', dob: new Date(1970,1,1)});
worksheet.addRow({id: 2, name: 'Jane Doe', dob: new Date(1965,1,7)});
// Add a row by contiguous Array (assign to columns A, B & C)
worksheet.addRow([3, 'Sam', new Date()]);
// Add a row by sparse Array (assign to columns A, E & I)
const rowValues = [];
rowValues[1] = 4;
rowValues[5] = 'Kyle';
rowValues[9] = new Date();
worksheet.addRow(rowValues);
// Add a row with inherited style
// This new row will have same style as last row
// And return as row object
const newRow = worksheet.addRow(rowValues, 'i');
// Add an array of rows
const rows = [
[5,'Bob',new Date()], // row by array
{id:6, name: 'Barbara', dob: new Date()}
];
// add new rows and return them as array of row objects
const newRows = worksheet.addRows(rows);
// Add an array of rows with inherited style
// These new rows will have same styles as last row
// and return them as array of row objects
const newRowsStyled = worksheet.addRows(rows, 'i'); Parameter Description Default Value value/s The new row/s values style 'i' for inherit from row above, 'i+' to include empty cells, 'n' for none 'n' Handling Individual Cells⬆
const cell = worksheet.getCell('C3');
// Modify/Add individual cell
cell.value = new Date(1968, 5, 1);
// query a cell's type
expect(cell.type).toEqual(Excel.ValueType.Date);
// use string value of cell
myInput.value = cell.text;
// use html-safe string for rendering...
const html = '<div>' + cell.html + '</div>';
// merge a range of cells
worksheet.mergeCells('A4:B5');
// ... merged cells are linked
worksheet.getCell('B5').value = 'Hello, World!';
expect(worksheet.getCell('B5').value).toBe(worksheet.getCell('A4').value);
expect(worksheet.getCell('B5').master).toBe(worksheet.getCell('A4'));
// ... merged cells share the same style object
expect(worksheet.getCell('B5').style).toBe(worksheet.getCell('A4').style);
worksheet.getCell('B5').style.font = myFonts.arial;
expect(worksheet.getCell('A4').style.font).toBe(myFonts.arial);
// unmerging the cells breaks the style links
worksheet.unMergeCells('A4');
expect(worksheet.getCell('B5').style).not.toBe(worksheet.getCell('A4').style);
expect(worksheet.getCell('B5').style.font).not.toBe(myFonts.arial);
// merge by top-left, bottom-right
worksheet.mergeCells('K10', 'M12');
// merge by start row, start column, end row, end column (equivalent to K10:M12)
worksheet.mergeCells(10,11,12,13);
insertRow(pos, value, style = 'n')
insertRows(pos, values, style = 'n')
// Insert a couple of Rows by key-value, shifting down rows every time
worksheet.insertRow(1, {id: 1, name: 'John Doe', dob: new Date(1970,1,1)});
worksheet.insertRow(1, {id: 2, name: 'Jane Doe', dob: new Date(1965,1,7)});
// Insert a row by contiguous Array (assign to columns A, B & C)
worksheet.insertRow(1, [3, 'Sam', new Date()]);
// Insert a row by sparse Array (assign to columns A, E & I)
var rowValues = [];
rowValues[1] = 4;
rowValues[5] = 'Kyle';
rowValues[9] = new Date();
// insert new row and return as row object
const insertedRow = worksheet.insertRow(1, rowValues);
// Insert a row, with inherited style
// This new row will have same style as row on top of it
// And return as row object
const insertedRowInherited = worksheet.insertRow(1, rowValues, 'i');
// Insert a row, keeping original style
// This new row will have same style as it was previously
// And return as row object
const insertedRowOriginal = worksheet.insertRow(1, rowValues, 'o');
// Insert an array of rows, in position 1, shifting down current position 1 and later rows by 2 rows
var rows = [
[5,'Bob',new Date()], // row by array
{id:6, name: 'Barbara', dob: new Date()}
];
// insert new rows and return them as array of row objects
const insertedRows = worksheet.insertRows(1, rows);
// Insert an array of rows, with inherited style
// These new rows will have same style as row on top of it
// And return them as array of row objects
const insertedRowsInherited = worksheet.insertRows(1, rows, 'i');
// Insert an array of rows, keeping original style
// These new rows will have same style as it was previously in 'pos' position
const insertedRowsOriginal = worksheet.insertRows(1, rows, 'o'); Parameter Description Default Value pos Row number where you want to insert, pushing down all rows from there value/s The new row/s values style 'i' for inherit from row above, , 'i+' to include empty cells, 'o' for original style, 'o+' to include empty cells, 'n' for none 'n'
// Cut one or more rows (rows below are shifted up) // Known Issue: If a splice causes any merged cells to move, the results may be unpredictable worksheet.spliceRows(4, 3); // remove one row and insert two more. // Note: rows 4 and below will be shifted down by 1 row. const newRow3Values = [1, 2, 3, 4, 5]; const newRow4Values = ['one', 'two', 'three', 'four', 'five']; worksheet.spliceRows(3, 1, newRow3Values, newRow4Values); // Cut one or more cells (cells to the right are shifted left) // Note: this operation will not affect other rows row.splice(3, 2); // remove one cell and insert two more (cells to the right of the cut cell will be shifted right) row.splice(4, 1, 'new value 1', 'new value 2');Parameter Description Default Value start Starting point to splice from count Number of rows/cells to remove ...inserts New row/cell values to insert
duplicateRow(start, amount = 1, insert = true)
const wb = new ExcelJS.Workbook();
const ws = wb.addWorksheet('duplicateTest');
ws.getCell('A1').value = 'One';
ws.getCell('A2').value = 'Two';
ws.getCell('A3').value = 'Three';
ws.getCell('A4').value = 'Four';
// This line will duplicate the row 'One' twice but it will replace rows 'Two' and 'Three'
// if third param was true so it would insert 2 new rows with the values and styles of row 'One'
ws.duplicateRow(1,2,false); Parameter Description Default Value start Row number you want to duplicate (first in excel is 1) amount The times you want to duplicate the row 1 insert true if you want to insert new rows for the duplicates, or false if you want to replace them true
Individual cells (or multiple groups of cells) can have names assigned to them. The names can be used in formulas and data validation (and probably more).
// assign (or get) a name for a cell (will overwrite any other names that cell had)
worksheet.getCell('A1').name = 'PI';
expect(worksheet.getCell('A1').name).to.equal('PI');
// assign (or get) an array of names for a cell (cells can have more than one name)
worksheet.getCell('A1').names = ['thing1', 'thing2'];
expect(worksheet.getCell('A1').names).to.have.members(['thing1', 'thing2']);
// remove a name from a cell
worksheet.getCell('A1').removeName('thing1');
expect(worksheet.getCell('A1').names).to.have.members(['thing2']);
Cells can define what values are valid or not and provide prompting to the user to help guide them.
Validation types can be one of the following:
Type Description list Define a discrete set of valid values. Excel will offer these in a dropdown for easy entry whole The value must be a whole number decimal The value must be a decimal number textLength The value may be text but the length is controlled custom A custom formula controls the valid valuesFor types other than list or custom, the following operators affect the validation:
Operator Description between Values must lie between formula results notBetween Values must not lie between formula results equal Value must equal formula result notEqual Value must not equal formula result greaterThan Value must be greater than formula result lessThan Value must be less than formula result greaterThanOrEqual Value must be greater than or equal to formula result lessThanOrEqual Value must be less than or equal to formula result// Specify list of valid values (One, Two, Three, Four).
// Excel will provide a dropdown with these values.
worksheet.getCell('A1').dataValidation = {
type: 'list',
allowBlank: true,
formulae: ['"One,Two,Three,Four"']
};
// Specify list of valid values from a range.
// Excel will provide a dropdown with these values.
worksheet.getCell('A1').dataValidation = {
type: 'list',
allowBlank: true,
formulae: ['$D$5:$F$5']
};
// Specify Cell must be a whole number that is not 5.
// Show the user an appropriate error message if they get it wrong
worksheet.getCell('A1').dataValidation = {
type: 'whole',
operator: 'notEqual',
showErrorMessage: true,
formulae: [5],
errorStyle: 'error',
errorTitle: 'Five',
error: 'The value must not be Five'
};
// Specify Cell must be a decimal number between 1.5 and 7.
// Add 'tooltip' to help guid the user
worksheet.getCell('A1').dataValidation = {
type: 'decimal',
operator: 'between',
allowBlank: true,
showInputMessage: true,
formulae: [1.5, 7],
promptTitle: 'Decimal',
prompt: 'The value must between 1.5 and 7'
};
// Specify Cell must be have a text length less than 15
worksheet.getCell('A1').dataValidation = {
type: 'textLength',
operator: 'lessThan',
showErrorMessage: true,
allowBlank: true,
formulae: [15]
};
// Specify Cell must be have be a date before 1st Jan 2016
worksheet.getCell('A1').dataValidation = {
type: 'date',
operator: 'lessThan',
showErrorMessage: true,
allowBlank: true,
formulae: [new Date(2016,0,1)]
};
Add old style comment to a cell
// plain text note
worksheet.getCell('A1').note = 'Hello, ExcelJS!';
// colourful formatted note
ws.getCell('B1').note = {
texts: [
{'font': {'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'This is '},
{'font': {'italic': true, 'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'a'},
{'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' '},
{'font': {'size': 12, 'color': {'argb': 'FFFF6600'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'colorful'},
{'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' text '},
{'font': {'size': 12, 'color': {'argb': 'FFCCFFCC'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'with'},
{'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' in-cell '},
{'font': {'bold': true, 'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'format'},
],
margins: {
insetmode: 'custom',
inset: [0.25, 0.25, 0.35, 0.35]
},
protection: {
locked: True,
lockText: False
},
editAs: 'twoCells',
}; Cell Comments Properties⬆
The following table defines the properties supported by cell comments.
Field Required Default Value Description texts Y The text of the comment margins N {} Determines the value of margins for automatic or custom cell comments protection N {} Specifying the lock status of objects and object text using protection attributes editAs N 'absolute' Use the 'editAs' attribute to specify how the annotation is anchored to the cellDetermine the page margin setting mode of the cell annotation, automatic or custom mode.
ws.getCell('B1').note.margins = {
insetmode: 'custom',
inset: [0.25, 0.25, 0.35, 0.35]
} Supported Margins Properties⬆ Property Required Default Value Description insetmode N 'auto' Determines whether comment margins are set automatically and the value is 'auto' or 'custom' inset N [0.13, 0.13, 0.25, 0.25] Whitespace on the borders of the comment. Units are centimeter. Direction is left, top, right, bottom
Note: This inset setting takes effect only when the value of insetmode is 'custom'.
Specifying the lock status of objects and object text using protection attributes.
ws.getCell('B1').note.protection = {
locked: 'False',
lockText: 'False',
}; Supported Protection Properties⬆ Property Required Default Value Description locked N 'True' This element specifies that the object is locked when the sheet is protected lockText N 'True' This element specifies that the text of the object is locked
Note: Locked objects are valid only when the worksheet is protected.
The cell comments can also have the property 'editAs' which will control how the comments is anchored to the cell(s). It can have one of the following values:
ws.getCell('B1').note.editAs = 'twoCells'; Value Description twoCells It specifies that the size and position of the note varies with cells oneCells It specifies that the size of the note is fixed and the position changes with the cell absolute This is the default. Comments will not be moved or sized with cells
Tables allow for in-sheet manipulation of tabular data.
To add a table to a worksheet, define a table model and call addTable:
// add a table to a sheet
ws.addTable({
name: 'MyTable',
ref: 'A1',
headerRow: true,
totalsRow: true,
style: {
theme: 'TableStyleDark3',
showRowStripes: true,
},
columns: [
{name: 'Date', totalsRowLabel: 'Totals:', filterButton: true},
{name: 'Amount', totalsRowFunction: 'sum', filterButton: false},
],
rows: [
[new Date('2019-07-20'), 70.10],
[new Date('2019-07-21'), 70.60],
[new Date('2019-07-22'), 70.10],
],
});
Note: Adding a table to a worksheet will modify the sheet by placing headers and row data to the sheet. Any data on the sheet covered by the resulting table (including headers and totals) will be overwritten.
The following table defines the properties supported by tables.
Table Property Description Required Default Value name The name of the table Y displayName The display name of the table N name ref Top left cell of the table Y headerRow Show headers at top of table N true totalsRow Show totals at bottom of table N false style Extra style properties N {} columns Column definitions Y rows Rows of data YThe following table defines the properties supported within the table style property.
Style Property Description Required Default Value theme The colour theme of the table N 'TableStyleMedium2' showFirstColumn Highlight the first column (bold) N false showLastColumn Highlight the last column (bold) N false showRowStripes Alternate rows shown with background colour N false showColumnStripes Alternate rows shown with background colour N falseThe following table defines the properties supported within each table column.
Column Property Description Required Default Value name The name of the column, also used in the header Y filterButton Switches the filter control in the header N false totalsRowLabel Label to describe the totals row (first column) N 'Total' totalsRowFunction Name of the totals function N 'none' totalsRowFormula Optional formula for custom functions NThe following table list the valid values for the totalsRowFunction property defined by columns. If any value other than 'custom' is used, it is not necessary to include the associated formula as this will be inserted by the table.
Totals Functions Description none No totals function for this column average Compute average for the column countNums Count the entries that are numbers count Count of entries max The maximum value in this column min The minimum value in this column stdDev The standard deviation for this column var The variance for this column sum The sum of entries for this column custom A custom formula. Requires an associated totalsRowFormula value.Valid theme names follow the following pattern:
Shades, Numbers can be one of:
For no theme, use the value null.
Note: custom table themes are not supported by exceljs yet.
Tables support a set of manipulation functions that allow data to be added or removed and some properties to be changed. Since many of these operations may have on-sheet effects, the changes must be committed once complete.
All index values in the table are zero based, so the first row number and first column number is 0.
Adding or Removing Headers and Totals
const table = ws.getTable('MyTable');
// turn header row on
table.headerRow = true;
// turn totals row off
table.totalsRow = false;
// commit the table changes into the sheet
table.commit();
Relocating a Table
const table = ws.getTable('MyTable');
// table top-left move to D4
table.ref = 'D4';
// commit the table changes into the sheet
table.commit();
Adding and Removing Rows
const table = ws.getTable('MyTable');
// remove first two rows
table.removeRows(0, 2);
// insert new rows at index 5
table.addRow([new Date('2019-08-05'), 5, 'Mid'], 5);
// append new row to bottom of table
table.addRow([new Date('2019-08-10'), 10, 'End']);
// commit the table changes into the sheet
table.commit();
Adding and Removing Columns
const table = ws.getTable('MyTable');
// remove second column
table.removeColumns(1, 1);
// insert new column (with data) at index 1
table.addColumn(
{name: 'Letter', totalsRowFunction: 'custom', totalsRowFormula: 'ROW()', totalsRowResult: 6, filterButton: true},
['a', 'b', 'c', 'd'],
2
);
// commit the table changes into the sheet
table.commit();
Change Column Properties
const table = ws.getTable('MyTable');
// Get Column Wrapper for second column
const column = table.getColumn(1);
// set some properties
column.name = 'Code';
column.filterButton = true;
column.style = {font:{bold: true, name: 'Comic Sans MS'}};
column.totalsRowLabel = 'Totals';
column.totalsRowFunction = 'custom';
column.totalsRowFormula = 'ROW()';
column.totalsRowResult = 10;
// commit the table changes into the sheet
table.commit();
Cells, Rows and Columns each support a rich set of styles and formats that affect how the cells are displayed.
Styles are set by assigning the following properties:
// assign a style to a cell
ws.getCell('A1').numFmt = '0.00%';
// Apply styles to worksheet columns
ws.columns = [
{ header: 'Id', key: 'id', width: 10 },
{ header: 'Name', key: 'name', width: 32, style: { font: { name: 'Arial Black' } } },
{ header: 'D.O.B.', key: 'DOB', width: 10, style: { numFmt: 'dd/mm/yyyy' } }
];
// Set Column 3 to Currency Format
ws.getColumn(3).numFmt = '"£"#,##0.00;[Red]\-"£"#,##0.00';
// Set Row 2 to Comic Sans.
ws.getRow(2).font = { name: 'Comic Sans MS', family: 4, size: 16, underline: 'double', bold: true };
When a style is applied to a row or column, it will be applied to all currently existing cells in that row or column. Also, any new cell that is created will inherit its initial styles from the row and column it belongs to.
If a cell's row and column both define a specific style (e.g. font), the cell will use the row style over the column style. However if the row and column define different styles (e.g. column.numFmt and row.font), the cell will inherit the font from the row and the numFmt from the column.
Caveat: All the above properties (with the exception of numFmt, which is a string), are JS object structures. If the same style object is assigned to more than one spreadsheet entity, then each entity will share the same style object. If the style object is later modified before the spreadsheet is serialized, then all entities referencing that style object will be modified too. This behaviour is intended to prioritize performance by reducing the number of JS objects created. If you want the style objects to be independent, you will need to clone them before assigning them. Also, by default, when a document is read from file (or stream) if spreadsheet entities share similar styles, then they will reference the same style object too.
// display value as '1 3/5'
ws.getCell('A1').value = 1.6;
ws.getCell('A1').numFmt = '# ?/?';
// display value as '1.60%'
ws.getCell('B1').value = 0.016;
ws.getCell('B1').numFmt = '0.00%';
// for the wannabe graphic designers out there
ws.getCell('A1').font = {
name: 'Comic Sans MS',
family: 4,
size: 16,
underline: true,
bold: true
};
// for the graduate graphic designers...
ws.getCell('A2').font = {
name: 'Arial Black',
color: { argb: 'FF00FF00' },
family: 2,
size: 14,
italic: true
};
// for the vertical align
ws.getCell('A3').font = {
vertAlign: 'superscript'
};
// note: the cell will store a reference to the font object assigned.
// If the font object is changed afterwards, the cell font will change also...
const font = { name: 'Arial', size: 12 };
ws.getCell('A3').font = font;
font.size = 20; // Cell A3 now has font size 20!
// Cells that share similar fonts may reference the same font object after
// the workbook is read from file or stream Font Property Description Example Value(s) name Font name. 'Arial', 'Calibri', etc. family Font family for fallback. An integer value. 1 - Serif, 2 - Sans Serif, 3 - Mono, Others - unknown scheme Font scheme. 'minor', 'major', 'none' charset Font charset. An integer value. 1, 2, etc. size Font size. An integer value. 9, 10, 12, 16, etc. color Colour description, an object containing an ARGB value. { argb: 'FFFF0000'} bold Font weight true, false italic Font slope true, false underline Font underline style true, false, 'none', 'single', 'double', 'singleAccounting', 'doubleAccounting' strike Font // set cell alignment to top-left, middle-center, bottom-right
ws.getCell('A1').alignment = { vertical: 'top', horizontal: 'left' };
ws.getCell('B1').alignment = { vertical: 'middle', horizontal: 'center' };
ws.getCell('C1').alignment = { vertical: 'bottom', horizontal: 'right' };
// set cell to wrap-text
ws.getCell('D1').alignment = { wrapText: true };
// set cell indent to 1
ws.getCell('E1').alignment = { indent: 1 };
// set cell text rotation to 30deg upwards, 45deg downwards and vertical text
ws.getCell('F1').alignment = { textRotation: 30 };
ws.getCell('G1').alignment = { textRotation: -45 };
ws.getCell('H1').alignment = { textRotation: 'vertical' };
Valid Alignment Property Values
horizontal vertical wrapText shrinkToFit indent readingOrder textRotation left top true true integer rtl 0 to 90 center middle false false ltr -1 to -90 right bottom vertical fill distributed justify justify centerContinuous distributed// set single thin border around A1
ws.getCell('A1').border = {
top: {style:'thin'},
left: {style:'thin'},
bottom: {style:'thin'},
right: {style:'thin'}
};
// set double thin green border around A3
ws.getCell('A3').border = {
top: {style:'double', color: {argb:'FF00FF00'}},
left: {style:'double', color: {argb:'FF00FF00'}},
bottom: {style:'double', color: {argb:'FF00FF00'}},
right: {style:'double', color: {argb:'FF00FF00'}}
};
// set thick red cross in A5
ws.getCell('A5').border = {
diagonal: {up: true, down: true, style:'thick', color: {argb:'FFFF0000'}}
};
Valid Border Styles
// fill A1 with red darkVertical stripes
ws.getCell('A1').fill = {
type: 'pattern',
pattern:'darkVertical',
fgColor:{argb:'FFFF0000'}
};
// fill A2 with yellow dark trellis and blue behind
ws.getCell('A2').fill = {
type: 'pattern',
pattern:'darkTrellis',
fgColor:{argb:'FFFFFF00'},
bgColor:{argb:'FF0000FF'}
};
// fill A3 with solid coral
ws.getCell('A3').fill = {
type: 'pattern',
pattern:'solid',
fgColor:{argb:'F08080'},
};
// fill A4 with blue-white-blue gradient from left to right
ws.getCell('A4').fill = {
type: 'gradient',
gradient: 'angle',
degree: 0,
stops: [
{position:0, color:{argb:'FF0000FF'}},
{position:0.5, color:{argb:'FFFFFFFF'}},
{position:1, color:{argb:'FF0000FF'}}
]
};
// fill A5 with red-green gradient from center
ws.getCell('A5').fill = {
type: 'gradient',
gradient: 'path',
center:{left:0.5,top:0.5},
stops: [
{position:0, color:{argb:'FFFF0000'}},
{position:1, color:{argb:'FF00FF00'}}
]
}; Property Required Description type Y Value: 'pattern'
Note: If you want to fill a cell using the solid pattern, then you don't need to specify bgColor. See example above for cell A3 with a solid pattern and a coral fgColor.
Valid Pattern Types
Caveats
Using the interface above it may be possible to create gradient fill effects not possible using the XLSX editor program. For example, Excel only supports angle gradients of 0, 45, 90 and 135. Similarly the sequence of stops may also be limited by the UI with positions [0,1] or [0,0.5,1] as the only options. Take care with this fill to be sure it is supported by the target XLSX viewers.
Individual cells now support rich text or in-cell formatting. Rich text values can control the font properties of any number of sub-strings within the text value. See Fonts for a complete list of details on what font properties are supported.
ws.getCell('A1').value = {
'richText': [
{'font': {'size': 12,'color': {'theme': 0},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'This is '},
{'font': {'italic': true,'size': 12,'color': {'theme': 0},'name': 'Calibri','scheme': 'minor'},'text': 'a'},
{'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' '},
{'font': {'size': 12,'color': {'argb': 'FFFF6600'},'name': 'Calibri','scheme': 'minor'},'text': 'colorful'},
{'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' text '},
{'font': {'size': 12,'color': {'argb': 'FFCCFFCC'},'name': 'Calibri','scheme': 'minor'},'text': 'with'},
{'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' in-cell '},
{'font': {'bold': true,'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'format'}
]
};
expect(ws.getCell('A1').text).to.equal('This is a colorful text with in-cell format');
expect(ws.getCell('A1').type).to.equal(Excel.ValueType.RichText);
Cell level protection can be modified using the protection property.
ws.getCell('A1').protection = {
locked: false,
hidden: true,
};
Supported Protection Properties
Property Default Description locked true Specifies whether a cell will be locked if the sheet is protected. hidden false Specifies whether a cell's formula will be visible if the sheet is protected.Conditional formatting allows a sheet to show specific styles, icons, etc depending on cell values or any arbitrary formula.
Conditional formatting rules are added at the sheet level and will typically cover a range of cells.
Multiple rules can be applied to a given cell range and each rule will apply its own style.
If multiple rules affect a given cell, the rule priority value will determine which rule wins out if competing styles collide. The rule with the lower priority value wins. If priority values are not specified for a given rule, ExcelJS will assign them in ascending order.
Note: at present, only a subset of conditional formatting rules are supported. Specifically, only the formatting rules that do not require XML rendering inside an <extLst> element. This means that datasets and three specific icon sets (3Triangles, 3Stars, 5Boxes) are not supported.
// add a checkerboard pattern to A1:E7 based on row + col being even or odd
worksheet.addConditionalFormatting({
ref: 'A1:E7',
rules: [
{
type: 'expression',
formulae: ['MOD(ROW()+COLUMN(),2)=0'],
style: {fill: {type: 'pattern', pattern: 'solid', bgColor: {argb: 'FF00FF00'}}},
}
]
})
Supported Conditional Formatting Rule Types
Type Description expression Any custom function may be used to activate the rule. cellIs Compares cell value with supplied formula using specified operator top10 Applies formatting to cells with values in top (or bottom) ranges aboveAverage Applies formatting to cells with values above (or below) average colorScale Applies a coloured background to cells based on where their values lie in the range iconSet Adds one of a range of icons to cells based on value containsText Applies formatting based on whether cell a specific text timePeriod Applies formatting based on whether cell datetime value lies within a specified range Field Optional Default Description type 'expression' priority Y <auto> determines priority ordering of styles formulae array of 1 formula string that returns a true/false value. To reference the cell value, use the top-left cell address style style structure to apply if the formula returns true Field Optional Default Description type 'cellIs' priority Y <auto> determines priority ordering of styles operator how to compare cell value with formula result formulae array of 1 formula string that returns the value to compare against each cell style style structure to apply if the comparison returns trueCell Is Operators
Operator Description equal Apply format if cell value equals formula value greaterThan Apply format if cell value is greater than formula value lessThan Apply format if cell value is less than formula value between Apply format if cell value is between two formula values (inclusive) Field Optional Default Description type 'top10' priority Y <auto> determines priority ordering of styles rank Y 10 specifies how many top (or bottom) values are included in the formatting percent Y false if true, the rank field is a percentage, not an absolute bottom Y false if true, the bottom values are included instead of the top style style structure to apply if the comparison returns true Field Optional Default Description type 'aboveAverage' priority Y <auto> determines priority ordering of styles aboveAverage Y false if true, the rank field is a percentage, not an absolute style style structure to apply if the comparison returns true Field Optional Default Description type 'colorScale' priority Y <auto> determines priority ordering of styles cfvo array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range color corresponding array of colours to use at given way points style style structure to apply if the comparison returns true Field Optional Default Description type 'iconSet' priority Y <auto> determines priority ordering of styles iconSet Y 3TrafficLights name of icon set to use showValue true Specifies whether the cells in the applied range display the icon and cell value, or the icon only reverse false Specifies whether the icons in the icon set specified in iconSet are show in reserve order. If custom equals "true" this value must be ignored custom false Specifies whether a custom set of icons is used cfvo array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range style style structure to apply if the comparison returns true Field Optional Default Description type 'dataBar' priority Y <auto> determines priority ordering of styles minLength 0 Specifies the length of the shortest data bar in this conditional formatting range maxLength 100 Specifies the length of the longest data bar in this conditional formatting range showValue true Specifies whether the cells in the conditional formatting range display both the data bar and the numeric value or the data bar gradient true Specifies whether the data bar has a gradient fill border true Specifies whether the data bar has a border negativeBarColorSameAsPositive true Specifies whether the data bar has a negative bar color that is different from the positive bar color negativeBarBorderColorSameAsPositive true Specifies whether the data bar has a negative border color that is different from the positive border color axisPosition 'auto' Specifies the axis position for the data bar direction 'leftToRight' Specifies the direction of the data bar cfvo array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range style style structure to apply if the comparison returns true Field Optional Default Description type 'containsText' priority Y <auto> determines priority ordering of styles operator type of text comparison text text to search for style style structure to apply if the comparison returns trueContains Text Operators
Operator Description containsText Apply format if cell value contains the value specified in the 'text' field containsBlanks Apply format if cell value contains blanks notContainsBlanks Apply format if cell value does not contain blanks containsErrors Apply format if cell value contains errors notContainsErrors Apply format if cell value does not contain errors Field Optional Default Description type 'timePeriod' priority Y <auto> determines priority ordering of styles timePeriod what time period to compare cell value to style style structure to apply if the comparison returns trueTime Periods
Time Period Description lastWeek Apply format if cell value falls within the last week thisWeek Apply format if cell value falls in this week nextWeek Apply format if cell value falls in the next week yesterday Apply format if cell value is equal to yesterday today Apply format if cell value is equal to today tomorrow Apply format if cell value is equal to tomorrow last7Days Apply format if cell value falls within the last 7 days lastMonth Apply format if cell value falls in last month thisMonth Apply format if cell value falls in this month nextMonth Apply format if cell value falls in next monthExcel supports outlining; where rows or columns can be expanded or collapsed depending on what level of detail the user wishes to view.
Outline levels can be defined in column setup:
worksheet.columns = [
{ header: 'Id', key: 'id', width: 10 },
{ header: 'Name', key: 'name', width: 32 },
{ header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }
];
Or directly on the row or column
worksheet.getColumn(3).outlineLevel = 1; worksheet.getRow(3).outlineLevel = 1;
The sheet outline levels can be set on the worksheet
// set column outline level worksheet.properties.outlineLevelCol = 1; // set row outline level worksheet.properties.outlineLevelRow = 1;
Note: adjusting outline levels on rows or columns or the outline levels on the worksheet will incur a side effect of also modifying the collapsed property of all rows or columns affected by the property change. E.g.:
worksheet.properties.outlineLevelCol = 1; worksheet.getColumn(3).outlineLevel = 1; expect(worksheet.getColumn(3).collapsed).to.be.true; worksheet.properties.outlineLevelCol = 2; expect(worksheet.getColumn(3).collapsed).to.be.false;
The outline properties can be set on the worksheet
worksheet.properties.outlineProperties = {
summaryBelow: false,
summaryRight: false,
};
Adding images to a worksheet is a two-step process. First, the image is added to the workbook via the addImage() function which will also return an imageId value. Then, using the imageId, the image can be added to the worksheet either as a tiled background or covering a cell range.
Note: As of this version, adjusting or transforming the image is not supported and images are not supported in streaming mode.
The Workbook.addImage function supports adding images by filename or by Buffer. Note that in both cases, the extension must be specified. Valid extension values include 'jpeg', 'png', 'gif'.
// add image to workbook by filename
const imageId1 = workbook.addImage({
filename: 'path/to/image.jpg',
extension: 'jpeg',
});
// add image to workbook by buffer
const imageId2 = workbook.addImage({
buffer: fs.readFileSync('path/to.image.png'),
extension: 'png',
});
// add image to workbook by base64
const myBase64Image = "data:image/png;base64,iVBORw0KG...";
const imageId2 = workbook.addImage({
base64: myBase64Image,
extension: 'png',
}); Add image background to worksheet⬆
Using the image id from Workbook.addImage, the background to a worksheet can be set using the addBackgroundImage function
// set background worksheet.addBackgroundImage(imageId1);
Using the image id from Workbook.addImage, an image can be embedded within the worksheet to cover a range. The coordinates calculated from the range will cover from the top-left of the first cell to the bottom right of the second.
// insert an image over B2:D6 worksheet.addImage(imageId2, 'B2:D6');
Using a structure instead of a range string, it is possible to partially cover cells.
Note that the coordinate system used for this is zero based, so the top-left of A1 will be { col: 0, row: 0 }. Fractions of cells can be specified by using floating point numbers, e.g. the midpoint of A1 is { col: 0.5, row: 0.5 }.
// insert an image over part of B2:D6
worksheet.addImage(imageId2, {
tl: { col: 1.5, row: 1.5 },
br: { col: 3.5, row: 5.5 }
});
The cell range can also have the property 'editAs' which will control how the image is anchored to the cell(s) It can have one of the following values:
Value Description undefined It specifies the image will be moved and sized with cells oneCell This is the default. Image will be moved with cells but not sized absolute Image will not be moved or sized with cellsws.addImage(imageId, {
tl: { col: 0.1125, row: 0.4 },
br: { col: 2.101046875, row: 3.4 },
editAs: 'oneCell'
});
You can add an image to a cell and then define its width and height in pixels at 96dpi.
worksheet.addImage(imageId2, {
tl: { col: 0, row: 0 },
ext: { width: 500, height: 200 }
}); Add image with hyperlinks⬆
You can add an image with hyperlinks to a cell, and defines the hyperlinks in image range.
worksheet.addImage(imageId2, {
tl: { col: 0, row: 0 },
ext: { width: 500, height: 200 },
hyperlinks: {
hyperlink: 'http://www.somewhere.com',
tooltip: 'http://www.somewhere.com'
}
});
Worksheets can be protected from modification by adding a password.
await worksheet.protect('the-password', options);
Worksheet protection can also be removed:
See Cell Protection for details on how to modify individual cell protection.
Note: While the protect() function returns a Promise indicating that it is async, the current implementation runs on the main thread and will use approx 600ms on an average CPU. This can be adjusted by setting the spinCount, which can be used to make the process either faster or more resilient.
Sheet Protection Options⬆ Field Default Description selectLockedCells true Lets the user select locked cells selectUnlockedCells true Lets the user select unlocked cells formatCells false Lets the user format cells formatColumns false Lets the user format columns formatRows false Lets the user format rows insertRows false Lets the user insert rows insertColumns false Lets the user insert columns insertHyperlinks false Lets the user insert hyperlinks deleteRows false Lets the user delete rows deleteColumns false Lets the user delete columns sort false Lets the user sort data autoFilter false Lets the user filter data in tables pivotTables false Lets the user use pivot tables spinCount 100000 The number of hash iterations performed when protecting or unprotectingOptions supported when reading XLSX files.
Field Required Type Description ignoreNodes N Array A list of node names to ignore while loading the XLSX document. Improves performance in some situations.sheetPr, dimension, sheetViews , sheetFormatPr, cols , sheetData, autoFilter , mergeCells , rowBreaks, hyperlinks , pageMargins, dataValidations, pageSetup, headerFooter , printOptions , picture, drawing, sheetProtection, tableParts , conditionalFormatting, extLst,
// read from a file
const workbook = new Excel.Workbook();
await workbook.xlsx.readFile(filename);
// ... use workbook
// read from a stream
const workbook = new Excel.Workbook();
await workbook.xlsx.read(stream);
// ... use workbook
// load from buffer
const workbook = new Excel.Workbook();
await workbook.xlsx.load(data);
// ... use workbook
// using additional options
const workbook = new Excel.Workbook();
await workbook.xlsx.load(data, {
ignoreNodes: [
'dataValidations' // ignores the workbook's Data Validations
],
});
// ... use workbook
// write to a file const workbook = createAndFillWorkbook(); await workbook.xlsx.writeFile(filename); // write to a stream await workbook.xlsx.write(stream); // write to a new buffer const buffer = await workbook.xlsx.writeBuffer();
Options supported when reading CSV files.
Field Required Type Description dateFormats N Array Specify the date encoding format of dayjs. map N Function Custom Array.prototype.map() callback function for processing data. sheetName N String Specify worksheet name. parserOptions N Object parseOptions options @fast-csv/format module to write csv data.// read from a file
const workbook = new Excel.Workbook();
const worksheet = await workbook.csv.readFile(filename);
// ... use workbook or worksheet
// read from a stream
const workbook = new Excel.Workbook();
const worksheet = await workbook.csv.read(stream);
// ... use workbook or worksheet
// read from a file with European Dates
const workbook = new Excel.Workbook();
const options = {
dateFormats: ['DD/MM/YYYY']
};
const worksheet = await workbook.csv.readFile(filename, options);
// ... use workbook or worksheet
// read from a file with custom value parsing
const workbook = new Excel.Workbook();
const options = {
map(value, index) {
switch(index) {
case 0:
// column 1 is string
return value;
case 1:
// column 2 is a date
return new Date(value);
case 2:
// column 3 is JSON of a formula value
return JSON.parse(value);
default:
// the rest are numbers
return parseFloat(value);
}
},
// https://c2fo.github.io/fast-csv/docs/parsing/options
parserOptions: {
delimiter: '\t',
quote: false,
},
};
const worksheet = await workbook.csv.readFile(filename, options);
// ... use workbook or worksheet
The CSV parser uses fast-csv to read the CSV file. The formatterOptions in the options passed to the above write function will be passed to the @fast-csv/format module to write csv data. Please refer to the fast-csv README.md for details.
Dates are parsed using the npm module dayjs. If a dateFormats array is not supplied, the following dateFormats are used:
Please refer to the dayjs CustomParseFormat plugin for details on how to structure a dateFormat.
Options supported when writing to a CSV file.
Field Required Type Description dateFormat N String Specify the date encoding format of dayjs. dateUTC N Boolean Specify whether ExcelJS usesdayjs.utc () to convert time zone for parsing dates. encoding N String Specify file encoding format. (Only applies to .writeFile.) includeEmptyRows N Boolean Specifies whether empty rows can be written. map N Function Custom Array.prototype.map() callback function for processing row values. sheetName N String Specify worksheet name. sheetId N Number Specify worksheet ID. formatterOptions N Object formatterOptions options @fast-csv/format module to write csv data.
// write to a file
const workbook = createAndFillWorkbook();
await workbook.csv.writeFile(filename);
// write to a stream
// Be careful that you need to provide sheetName or
// sheetId for correct import to csv.
await workbook.csv.write(stream, { sheetName: 'Page name' });
// write to a file with European Date-Times
const workbook = new Excel.Workbook();
const options = {
dateFormat: 'DD/MM/YYYY HH:mm:ss',
dateUTC: true, // use utc when rendering dates
};
await workbook.csv.writeFile(filename, options);
// write to a file with custom value formatting
const workbook = new Excel.Workbook();
const options = {
map(value, index) {
switch(index) {
case 0:
// column 1 is string
return value;
case 1:
// column 2 is a date
return dayjs(value).format('YYYY-MM-DD');
case 2:
// column 3 is a formula, write just the result
return value.result;
default:
// the rest are numbers
return value;
}
},
// https://c2fo.github.io/fast-csv/docs/formatting/options
formatterOptions: {
delimiter: '\t',
quote: false,
},
};
await workbook.csv.writeFile(filename, options);
// write to a new buffer
const buffer = await workbook.csv.writeBuffer();
The CSV parser uses fast-csv to write the CSV file. The formatterOptions in the options passed to the above write function will be passed to the @fast-csv/format module to write csv data. Please refer to the fast-csv README.md for details.
Dates are formatted using the npm module dayjs. If no dateFormat is supplied, dayjs.ISO_8601 is used. When writing a CSV you can supply the boolean dateUTC as true to have ExcelJS parse the date without automatically converting the timezone using dayjs.utc().
The File I/O documented above requires that an entire workbook is built up in memory before the file can be written. While convenient, it can limit the size of the document due to the amount of memory required.
A streaming writer (or reader) processes the workbook or worksheet data as it is generated, converting it into file form as it goes. Typically this is much more efficient on memory as the final memory footprint and even intermediate memory footprints are much more compact than with the document version, especially when you consider that the row and cell objects are disposed once they are committed.
The interface to the streaming workbook and worksheet is almost the same as the document versions with a few minor practical differences:
Note that it is possible to build the entire workbook without committing any rows. When the workbook is committed, all added worksheets (including all uncommitted rows) will be automatically committed. However in this case, little will have been gained over the Document version.
Streaming XLSX Writer(#contents)The streaming XLSX workbook writer is available in the ExcelJS.stream.xlsx namespace.
The constructor takes an optional options object with the following fields:
Field Description stream Specifies a writable stream to write the XLSX workbook to. filename If stream not specified, this field specifies the path to a file to write the XLSX workbook to. useSharedStrings Specifies whether to use shared strings in the workbook. Default isfalse. useStyles Specifies whether to add style information to the workbook. Styles can add some performance overhead. Default is false. zip Zip options that ExcelJS internally passes to Archiver. Default is undefined.
If neither stream nor filename is specified in the options, the workbook writer will create a StreamBuf object that will store the contents of the XLSX workbook in memory. This StreamBuf object, which can be accessed via the property workbook.stream, can be used to either access the bytes directly by stream.read() or to pipe the contents to another stream.
// construct a streaming XLSX workbook writer with styles and shared strings
const options = {
filename: './streamed-workbook.xlsx',
useStyles: true,
useSharedStrings: true
};
const workbook = new Excel.stream.xlsx.WorkbookWriter(options);
In general, the interface to the streaming XLSX writer is the same as the Document workbook (and worksheets) described above, in fact the row, cell and style objects are the same.
However there are some differences...
Construction
As seen above, the WorkbookWriter will typically require the output stream or file to be specified in the constructor.
Committing Data
When a worksheet row is ready, it should be committed so that the row object and contents can be freed. Typically this would be done as each row is added...
worksheet.addRow({
id: i,
name: theName,
etc: someOtherDetail
}).commit();
The reason the WorksheetWriter does not commit rows as they are added is to allow cells to be merged across rows:
worksheet.mergeCells('A1:B2');
worksheet.getCell('A1').value = 'I am merged';
worksheet.getCell('C1').value = 'I am not';
worksheet.getCell('C2').value = 'Neither am I';
worksheet.getRow(2).commit(); // now rows 1 and two are committed.
As each worksheet is completed, it must also be committed:
// Finished adding data. Commit the worksheet worksheet.commit();
To complete the XLSX document, the workbook must be committed. If any worksheet in a workbook are uncommitted, they will be committed automatically as part of the workbook commit.
// Finished the workbook. await workbook.commit(); // ... the stream has been writtenStreaming XLSX Reader(#contents)
The streaming XLSX workbook reader is available in the ExcelJS.stream.xlsx namespace.
The constructor takes a required input argument and an optional options argument:
Argument Description input (required) Specifies the name of the file or the readable stream from which to read the XLSX workbook. options (optional) Specifies how to handle the event types occuring during the read parsing. options.entries Specifies whether to emit entries ('emit') or not ('ignore'). Default is 'emit'. options.sharedStrings Specifies whether to cache shared strings ('cache'), which inserts them into the respective cell values, or whether to emit them ('emit') or ignore them ('ignore'), in both of which case the cell value will be a reference to the shared string's index. Default is 'cache'. options.hyperlinks Specifies whether to cache hyperlinks ('cache'), which inserts them into their respective cells, whether to emit them ('emit') or whether to ignore them ('ignore'). Default is 'cache'. options.styles Specifies whether to cache styles ('cache'), which inserts them into their respective rows and cells, or whether to ignore them ('ignore'). Default is 'cache'. options.worksheets Specifies whether to emit worksheets ('emit') or not ('ignore'). Default is 'emit'.
const workbookReader = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx');
for await (const worksheetReader of workbookReader) {
for await (const row of worksheetReader) {
// ...
}
}
Please note that worksheetReader returns an array of rows rather than each row individually for performance reasons: nodejs/node#31979
Events on workbook are 'worksheet', 'shared-strings' and 'hyperlinks'. Events on worksheet are 'row' and 'hyperlinks'.
const options = {
sharedStrings: 'emit',
hyperlinks: 'emit',
worksheets: 'emit',
};
const workbook = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx', options);
for await (const {eventType, value} of workbook.parse()) {
switch (eventType) {
case 'shared-strings':
// value is the shared string
case 'worksheet':
// value is the worksheetReader
case 'hyperlinks':
// value is the hyperlinksReader
}
} Readable stream(#contents)
While we strongly encourage to use async iteration, we also expose a streaming interface for backwards compatibility.
const options = {
sharedStrings: 'emit',
hyperlinks: 'emit',
worksheets: 'emit',
};
const workbookReader = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx', options);
workbookReader.read();
workbookReader.on('worksheet', worksheet => {
worksheet.on('row', row => {
});
});
workbookReader.on('shared-strings', sharedString => {
// ...
});
workbookReader.on('hyperlinks', hyperlinksReader => {
// ...
});
workbookReader.on('end', () => {
// ...
});
workbookReader.on('error', (err) => {
// ...
});
A portion of this library has been isolated and tested for use within a browser environment.
Due to the streaming nature of the workbook reader and workbook writer, these have not been included. Only the document based workbook may be used (see Create a Workbook for details).
For example code using ExcelJS in the browser take a look at the spec/browser folder in the github repo.
The following files are pre-bundled and included inside the dist folder.
The following value types are supported.
Enum: Excel.ValueType.Null
A null value indicates an absence of value and will typically not be stored when written to file (except for merged cells). It can be used to remove the value from a cell.
E.g.
worksheet.getCell('A1').value = null;
Enum: Excel.ValueType.Merge
A merge cell is one that has its value bound to another 'master' cell. Assigning to a merge cell will cause the master's cell to be modified.
Enum: Excel.ValueType.Number
A numeric value.
E.g.
worksheet.getCell('A1').value = 5;
worksheet.getCell('A2').value = 3.14159;
Enum: Excel.ValueType.String
A simple text string.
E.g.
worksheet.getCell('A1').value = 'Hello, World!';
Enum: Excel.ValueType.Date
A date value, represented by the JavaScript Date type.
E.g.
worksheet.getCell('A1').value = new Date(2017, 2, 15);
Enum: Excel.ValueType.Hyperlink
A URL with both text and link value.
E.g.
// link to web
worksheet.getCell('A1').value = {
text: 'www.mylink.com',
hyperlink: 'http://www.mylink.com',
tooltip: 'www.mylink.com'
};
// internal link
worksheet.getCell('A1').value = { text: 'Sheet2', hyperlink: '#\'Sheet2\'!A1' };
Enum: Excel.ValueType.Formula
An Excel formula for calculating values on the fly. Note that while the cell type will be Formula, the cell may have an effectiveType value that will be derived from the result value.
Note that ExcelJS cannot process the formula to generate a result, it must be supplied.
Note that function semantic names must be in English and the separator must be a comma.
E.g.
worksheet.getCell('A3').value = { formula: 'A1+A2', result: 7 };
worksheet.getCell('A3').value = { formula: 'SUM(A1,A2)', result: 7 };
Cells also support convenience getters to access the formula and result:
worksheet.getCell('A3').formula === 'A1+A2';
worksheet.getCell('A3').result === 7;
Shared formulae enhance the compression of the xlsx document by decreasing the repetition of text within the worksheet xml. The top-left cell in a range is the designated master and will hold the formula that all the other cells in the range will derive from. The other 'slave' cells can then refer to this master cell instead of redefining the whole formula again. Note that the master formula will be translated to the slave cells in the usual Excel fashion so that references to other cells will be shifted down and to the right depending on the slave's offset to the master. For example: if the master cell A2 has a formula referencing A1 then if cell B2 shares A2's formula, then it will reference B1.
A master formula can be assigned to a cell along with the slave cells in its range
worksheet.getCell('A2').value = {
formula: 'A1',
result: 10,
shareType: 'shared',
ref: 'A2:B3'
};
A shared formula can be assigned to a cell using a new value form:
worksheet.getCell('B2').value = { sharedFormula: 'A2', result: 10 };
This specifies that the cell B2 is a formula that will be derived from the formula in A2 and its result is 10.
The formula convenience getter will translate the formula in A2 to what it should be in B2:
expect(worksheet.getCell('B2').formula).to.equal('B1');
Shared formulae can be assigned into a sheet using the 'fillFormula' function:
// set A1 to starting number
worksheet.getCell('A1').value = 1;
// fill A2 to A10 with ascending count starting from A1
worksheet.fillFormula('A2:A10', 'A1+1', [2,3,4,5,6,7,8,9,10]);
fillFormula can also use a callback function to calculate the value at each cell
// fill A2 to A100 with ascending count starting from A1
worksheet.fillFormula('A2:A100', 'A1+1', (row, col) => row);
To distinguish between real and translated formula cells, use the formulaType getter:
worksheet.getCell('A3').formulaType === Enums.FormulaType.Master;
worksheet.getCell('B3').formulaType === Enums.FormulaType.Shared;
Formula type has the following values:
Name Value Enums.FormulaType.None 0 Enums.FormulaType.Master 1 Enums.FormulaType.Shared 2A new way of expressing shared formulae in Excel is the array formula. In this form, the master cell is the only cell that contains any information relating to a formula. It contains the shareType 'array' along with the range of cells it applies to and the formula that will be copied. The rest of the cells are regular cells with regular values.
Note: array formulae are not translated in the way shared formulae are. So if master cell A2 refers to A1, then slave cell B2 will also refer to A1.
E.g.
// assign array formula to A2:B3
worksheet.getCell('A2').value = {
formula: 'A1',
result: 10,
shareType: 'array',
ref: 'A2:B3'
};
// it may not be necessary to fill the rest of the values in the sheet
The fillFormula function can also be used to fill an array formula
// fill A2:B3 with array formula "A1"
worksheet.fillFormula('A2:B3', 'A1', [1,1,1,1], 'array');
Enum: Excel.ValueType.RichText
Rich, styled text.
E.g.
worksheet.getCell('A1').value = {
richText: [
{ text: 'This is '},
{font: {italic: true}, text: 'italic'},
]
};
Enum: Excel.ValueType.Boolean
E.g.
worksheet.getCell('A1').value = true;
worksheet.getCell('A2').value = false;
Enum: Excel.ValueType.Error
E.g.
worksheet.getCell('A1').value = { error: '#N/A' };
worksheet.getCell('A2').value = { error: '#VALUE!' };
The current valid Error text values are:
Name Value Excel.ErrorValue.NotApplicable #N/A Excel.ErrorValue.Ref #REF! Excel.ErrorValue.Name #NAME? Excel.ErrorValue.DivZero #DIV/0! Excel.ErrorValue.Null #NULL! Excel.ErrorValue.Value #VALUE! Excel.ErrorValue.Num #NUM!Every effort is made to make a good consistent interface that doesn't break through the versions but regrettably, now and then some things have to change for the greater good.
The arguments in the callback function to Worksheet.eachRow have been swapped and changed; it was function(rowNumber,rowValues), now it is function(row, rowNumber) which gives it a look and feel more like the underscore (_.each) function and priorities the row object over the row number.
This function has changed from returning a sparse array of cell values to returning a Row object. This enables accessing row properties and will facilitate managing row styles and so on.
The sparse array of cell values is still available via Worksheet.getRow(rowNumber).values;
cell.styles renamed to cell.style
Promises returned from functions switched from Bluebird to native node Promise which can break calling code if they rely on Bluebird's extra features.
To mitigate this the following two changes were added to 0.3.0:
ExcelJS now supports dependency injection for the promise library. You can restore Bluebird promises by including the following code in your module...
ExcelJS.config.setValue('promise', require('bluebird'));
Please note: I have tested ExcelJS with bluebird specifically (since up until recently this was the library it used). From the tests I have done it will not work with Q.
Before publishing this module, the source code is transpiled and otherwise processed before being placed in a dist/ folder. This README identifies two files - a browserified bundle and minified version. No other contents of the dist/ folder are guaranteed in any way other than the file specified as "main" in the package.json
The test suite included in this lib includes a small script executed in a headless browser to validate the bundled packages. At the time of this writing, it appears that this test does not play nicely in the Windows Linux subsystem.
For this reason, the browser test can be disabled by the existence of a file named .disable-test-browser
sudo apt-get install libfontconfig
If any splice operation affects a merged cell, the merge group will not be moved correctly
Version Changes 0.0.9 0.1.0Addressed the following issues:
Regarding themes: the theme files stored inside the xlsx container hold important information regarding colours, styles etc and if the theme information from a loaded xlsx file is lost, the results can be unpredictable and undesirable. To address this, when an ExcelJS Workbook parses an XLSX file, it will preserve any theme files it finds and include them when writing to a new XLSX. If this behaviour is not desired, the Workbook class exposes a clearThemes() function which will drop the theme content. Note that this behaviour is only implemented in the document based Workbook class, not the streamed Reader and Writer.
Merged add comment support #529 #823. Many thanks to ilimei for this contribution.
This fixes the following issues:
Introducing async/await to ExcelJS!
The new async and await features of JavaScript can help a lot to make code more readable and maintainable. To avoid confusion, particularly with returned promises from async functions, we have had to remove the Promise class configuration option and from v2 onwards ExcelJS will use native Promises. Since this is potentially a breaking change we're bumping the major version for this release.
ChangesJavascript has changed a lot over the years, and so have the modules and technologies surrounding it. To this end, this major version of ExcelJS changes the structure of the publish artefacts:
Main Export is now the Original Javascript SourcePrior to this release, the transpiled ES5 code was exported as the package main. From now on, the package main comes directly from the lib/ folder. This means a number of dependencies have been removed, including the polyfills.
ES5 and Browserify are Still IncludedIn order to support those that still require ES5 ready code (e.g. as dependencies in web apps) the source code will still be transpiled and available in dist/es5.
The ES5 code is also browserified and available as dist/exceljs.js or dist/exceljs.min.js
See the section Importing for details
3.1.0
shrinkToFit to document and typing #959. Many thanks to ('3') for this contribution. This fixes shrinkToFit property not on documentation #943.editAs not working #1104. Many thanks to Alan Wang for this contribution.Z in the date formats #1270. Many thanks to Andreas Lubbe for this contribution.encoding option is just for .writeFile #1496. Many thanks to Joseph Dykstra for this contribution.RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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