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Showing content from https://github.com/mailru/FileAPI below:

mailru/FileAPI: FileAPI — a set of javascript tools for working with files. Multiupload, drag'n'drop and chunked file upload. Images: crop, resize and auto orientation by EXIF.

FileAPI

A set of JavaScript tools for working with files.

Download the files from the dist directory, and then:

	<div>
		<!-- "js-fileapi-wrapper" -- required class -->
		<div class="js-fileapi-wrapper upload-btn">
			<div class="upload-btn__txt">Choose files</div>
			<input id="choose" name="files" type="file" multiple />
		</div>
		<div id="images"><!-- previews --></div>
	</div>

	<script>window.FileAPI = { staticPath: '/js/FileAPI/dist/' };</script>
	<script src="/js/FileAPI/dist/FileAPI.min.js"></script>
	<script>
		var choose = document.getElementById('choose');
		FileAPI.event.on(choose, 'change', function (evt){
			var files = FileAPI.getFiles(evt); // Retrieve file list

			FileAPI.filterFiles(files, function (file, info/**Object*/){
				if( /^image/.test(file.type) ){
					return	info.width >= 320 && info.height >= 240;
				}
				return	false;
			}, function (files/**Array*/, rejected/**Array*/){
				if( files.length ){
					// Make preview 100x100
					FileAPI.each(files, function (file){
						FileAPI.Image(file).preview(100).get(function (err, img){
							images.appendChild(img);
						});
					});

					// Uploading Files
					FileAPI.upload({
						url: './ctrl.php',
						files: { images: files },
						progress: function (evt){ /* ... */ },
						complete: function (err, xhr){ /* ... */ }
					});
				}
			});
		});
	</script>

Edit the file crossdomain.xml and place it to the root of the domain to which files will be uploaded.

	<script>
		window.FileAPI = {
			  debug: false   // debug mode, see Console
			, cors: false    // if used CORS, set `true`
			, media: false   // if used WebCam, set `true`
			, staticPath: '/js/FileAPI/dist/' // path to '*.swf'
			, postNameConcat: function (name, idx){
				// Default: object[foo]=1&object[bar][baz]=2
				// .NET: https://github.com/mailru/FileAPI/issues/121#issuecomment-24590395
				return	name + (idx != null ? '['+ idx +']' : '');
			}
		};
	</script>
	<script src="/js/FileAPI/dist/FileAPI.min.js"></script>

	<!-- OR -->

	<script>
		window.FileAPI = { /* options */ };
		require(['FileAPI'], function (FileAPI){
			// ...
		});
	</script>

getFiles(input:HTMLInputElement|Event|$.Event):Array

Retrieve file list from input element or event object, also support jQuery.

input — HTMLInputElement, change and drop event, jQuery collection or jQuery.Event

var el = document.getElement('my-input');
FileAPI.event.on(el, 'change', function (evt/**Event*/){
	// Retrieve file list
	var files = FileAPI.getFiles(el);

	// or event
	var files = FileAPI.getFiles(evt);
});

getInfo(file:Object, callback:Function):void

Get info of file (see also: FileAPI.addInfoReader).

file — file object (https://developer.mozilla.org/en-US/docs/DOM/File)
callback — function, called after collected info of file

// Get info of image file (FileAPI.exif.js included)
FileAPI.getInfo(file, function (err/**String*/, info/**Object*/){
	if( !err ){
		console.log(info); // { width: 800, height: 600, exif: {..} }
	}
});

// Get info of mp3 file (FileAPI.id3.js included)
FileAPI.getInfo(file, function (err/**String*/, info/**Object*/){
	if( !err ){
		console.log(info); // { title: "...", album: "...", artists: "...", ... }
	}
});

filterFiles(files:Array, filter:Function, callback:Function):void

Filtering the list of files, with additional information about files. See also: FileAPI.getInfo and FileAPI.addInfoReader.

files — original list of files
filter — function, takes two arguments: file — the file itself, info — additional information.
callback — function: list — files that match the condition, other — all the rest.

// Get list of file
var files = FileAPI.getFiles(input);

// Filter the List
FileAPI.filterFiles(files, function (file/**Object*/, info/**Object*/){
	if( /^image/.test(file.type) && info ){
		return	info.width > 320 && info.height > 240;
	} else {
		return	file.size < 20 * FileAPI.MB;
	}
}, function (list/**Array*/, other/**Array*/){
	if( list.length ){
		// ..
	}
});

getDropFiles(evt:Event|$.Event, callback:Function):void

Get a list of files, including directories.

evt — drop event
callback — function, takes one argument, a list of files

FileAPI.event.on(document, 'drop', function (evt/**Event*/){
	evt.preventDefault();

	// Get a list of files
	FileAPI.getDropFiles(evt, function (files/**Array*/){
		// ...
	});
});

upload(opts:Object):XmlHttpRequest

Uploading files to the server (successively). Returns XHR-like object. It is important to remember to correctly worked flash-transport server response body must not be empty, for example, you can pass, just text "ok".

opts — options object, see Upload options

var el = document.getElementById('my-input');
FileAPI.event.on(el, 'change', function (evt/**Event*/){
	var files = FileAPI.getFiles(evt);
	var xhr = FileAPI.upload({
		url: 'http://rubaxa.org/FileAPI/server/ctrl.php',
		files: { file: files[0] },
		complete: function (err, xhr){
			if( !err ){
				var result = xhr.responseText;
				// ...
			}
		}
	});
});

addInfoReader(mime:RegExp, handler:Function):void

Adds a handler for the collection of information about a file. See also: FileAPI.getInfo and FileAPI.filterFiles.

mime — pattern of mime-type
handler — takes two arguments: file object and complete function callback

FileAPI.addInfoReader(/^image/, function (file/**File*/, callback/**Function*/){
	// http://www.nihilogic.dk/labs/exif/exif.js
	// http://www.nihilogic.dk/labs/binaryajax/binaryajax.js
	FileAPI.readAsBinaryString(file, function (evt/**Object*/){
		if( evt.type == 'load' ){
			var binaryString = evt.result;
			var oFile = new BinaryFile(binaryString, 0, file.size);
			var exif  = EXIF.readFromBinaryFile(oFile);
			callback(false, { 'exif': exif || {} });
		}
		else if( evt.type == 'error' ){
			callback('read_as_binary_string');
		}
		else if( evt.type == 'progress' ){
			// ...
		}
	});
});

readAsDataURL(file:Object, callback:Function):void

Reading the contents of the specified File as dataURL.

file — file object
callback — function, receives a result

FileAPI.readAsDataURL(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var dataURL = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

readAsBinaryString(file:Object, callback:Function):void

Reading the contents of the specified File as BinaryString.

file — file object
callback — function, receives a result

FileAPI.readAsBinaryString(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var binaryString = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

readAsArrayBuffer(file:Object, callback:Function):void

Reading the contents of the specified File as ArrayBuffer.

file — file object
callback — function, receives a result

FileAPI.readAsArrayBuffer(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var arrayBuffer = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

readAsText(file:Object, callback:Function):void

Reading the contents of the specified File as text.

file — file object
callback — function, receives a result

FileAPI.readAsText(file, function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var text = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

readAsText(file:Object, encoding:String, callback:Function):void

Reading the contents of the specified File as text.

encoding — a string indicating the encoding to use for the returned data. By default, UTF-8.

FileAPI.readAsText(file, "utf-8", function (evt/**Object*/){
	if( evt.type == 'load' ){
		// Success
	 	var text = evt.result;
	} else if( evt.type =='progress' ){
		var pr = evt.loaded/evt.total * 100;
	} else {
		// Error
	}
})

A string containing the URL to which the request is sent.

Additional post data to be sent along with the file uploads.

var xhr = FileAPI.upload({
	url: '...',
	data: { 'session-id': 123 },
	files: { ... },
});

Request method, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	uploadMethod: 'PUT',
	files: { .. },
});

uploadCredentials:Boolean

Pass credentials to upload request, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	uploadCredentials: false,
	files: { .. },
});

Additional request headers, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	headers: { 'x-upload': 'fileapi' },
	files: { .. },
});

Setting to true removes the default timestamp URL parameter.

Key-value object, key — post name, value — File or FileAPI.Image object.

var xhr = FileAPI.upload({
	url: '...',
	files: {
		audio: files
	}
});

Chunk size in bytes, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	files: { images: fileList },
	chunkSize: 0.5 * FileAPI.MB
});

Number of retries during upload chunks, HTML5 only.

var xhr = FileAPI.upload({
	url: '...',
	files: { images: fileList },
	chunkSize: 0.5 * FileAPI.MB,
	chunkUploadRetry: 3
});

Rules of changes the original image on the client.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	// Changes the original image
	imageTransform: {
		// resize by max side
		maxWidth: 800,
		maxHeight: 600,
		// Add watermark
		overlay: [{ x: 10, y: 10, src: '/i/watemark.png', rel: FileAPI.Image.RIGHT_BOTTOM }]
	}
});

Rules of image transformation on the client, for more images.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	imageTransform: {
		// resize by max side
		'huge': { maxWidth: 800, maxHeight: 600 },
		// crop & resize
		'medium': { width: 320, height: 240, preview: true },
		// crop & resize + watemark
		'small': {
			width: 100, height: 100,
			// Add watermark
			overlay: [{ x: 5, y: 5, src: '/i/watemark.png', rel: FileAPI.Image.RIGHT_BOTTOM }]
		}
	}
});

Convert all images to jpeg or png.

var xhr = FileAPI.upload({
	url: '...',
	files: { image: imageFiles },
	imageTransform: {
		type: 'image/jpeg',
		quality: 0.86 // jpeg quality
	}
});

Sent to the server the original image or not, if defined imageTransform option.

imageAutoOrientation:Boolean

Auto-rotate images on the basis of EXIF.

Prepare options upload for a particular file.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	prepare: function (file/**Object*/, options/**Object*/){
		options.data.secret = utils.getSecretKey(file.name);
	}
});

Start uploading.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	upload: function (xhr/**Object*/, options/**Object*/){
		// ...
	}
});

Start file uploading.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	fileupload: function (file/**Object*/, xhr/**Object*/, options/**Object*/){
		// ...
	}
});

Callback for upload progress events.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	progress: function (evt/**Object*/, file/**Object*/, xhr/**Object*/, options/**Object*/){
		var pr = evt.loaded/evt.total * 100;
	}
});

Callback for upload file progress events.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	fileprogress: function (evt/**Object*/, file/**Object*/, xhr/**Object*/, options/**Object*/){
		var pr = evt.loaded/evt.total * 100;
	}
});

Callback for end upload requests.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	complete: function (err/**String*/, xhr/**Object*/, file/**Object/, options/**Object*/){
		if( !err ){
			// All files successfully uploaded.
		}
	}
});

Callback for end upload requests.

var xhr = FileAPI.upload({
	url: '...',
	files: { .. }
	filecomplete: function (err/**String*/, xhr/**Object*/, file/**Object/, options/**Object*/){
		if( !err ){
			// File successfully uploaded
			var result = xhr.responseText;
		}
	}
});

The name of the file referenced by the File object.

The type (MIME type) of the file referenced by the File object.

The size (in bytes) of the file referenced by the File object.

on(el:HTMLElement, events:String, handler:Function):void

Attach an event handler function.

el — DOM element
events — one or more space-separated event types.
handler — A function to execute when the event is triggered.

off(el:HTMLElement, events:String, handler:Function):void

Remove an event handler.

el — DOM element
events — one or more space-separated event types.
handler — a handler function previously attached for the event(s).

one(el:HTMLElement, events:String, handler:Function):void

Attach an event handler function. The handler is executed at most once.

el — DOM element
events — one or more space-separated event types.
handler — a function to execute when the event is triggered.

dnd(el:HTMLElement, hover:Function, handler:Function):void

Attach an drag and drop event handler function.

el — drop zone
hover — dragenter and dragleave listener
handler — drop event handler.

var el = document.getElementById('dropzone');
FileAPI.event.dnd(el, function (over){
	el.style.backgroundColor = over ? '#f60': '';
}, function (files){
	if( files.length ){
		// Upload their.
	}
});

// or jQuery
$('#dropzone').dnd(hoverFn, dropFn);

dnd.off(el:HTMLElement, hover:Function, handler:Function):void

Remove an drag and drop event handler function.

el — drop zone
hover — dragenter and dragleave listener
handler — drop event handler.

// Native
FileAPI.event.dnd.off(el, hoverFn, dropFn);

// jQuery
$('#dropzone').dndoff(hoverFn, dropFn);

Class for working with images

constructor(file:Object):void

The constructor takes a single argument, the File object.

file — the File object

FileAPI.Image(imageFile).get(function (err/**String*/, img/**HTMLElement*/){
	if( !err ){
		document.body.appendChild( img );
	}
});

crop(width:Number, height:Number):FileAPI.Image

Crop image by width and height.

width — new image width
height — new image height

FileAPI.Image(imageFile)
	.crop(640, 480)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

crop(x:Number, y:Number, width:Number, height:Number):FileAPI.Image

Crop image by x, y, width and height.

x — offset from the top corner
y — offset from the left corner

FileAPI.Image(imageFile)
	.crop(100, 50, 320, 240)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

resize(width:Number, height:Number[, strategy:String]):FileAPI.Image

Resize image.

width — new image width
height — new image height
strategy — enum: min, max, preview, width, height. By default undefined.

FileAPI.Image(imageFile)
	.resize(320, 240)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

// Resize image on by max side.
FileAPI.Image(imageFile)
	.resize(320, 240, 'max')
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

// Resize image on by fixed height.
FileAPI.Image(imageFile)
	.resize(240, 'height')
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

preview(width:Number[, height:Number]):FileAPI.Image

Crop and resize image.

width — new image width
height — new image height

FileAPI.Image(imageFile)
	.preview(100, 100)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

rotate(deg:Number):FileAPI.Image

Rotate image.

deg — rotation angle in degrees

FileAPI.Image(imageFile)
	.rotate(90)
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

filter(callback:Function):FileAPI.Image

Apply filter function. Only HTML5.

callback — takes two arguments, canvas element and done method.

FileAPI.Image(imageFile)
	.filter(function (canvas/**HTMLCanvasElement*/, doneFn/**Function*/){
		// bla-bla-lba
		doneFn();
	})
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

filter(name:String):FileAPI.Image

Uses CamanJS, include it before FileAPI library.

name — CamanJS filter name (custom or preset)

Caman.Filter.register("my-funky-filter", function () {
	// http://camanjs.com/guides/#Extending
});

FileAPI.Image(imageFile)
	.filter("my-funky-filter") // or .filter("vintage")
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

overlay(images:Array):FileAPI.Image

Add overlay images, eg: watermark.

images — array of overlays

FileAPI.Image(imageFile)
	.overlay([
		// Left corner.
		{ x: 10, y: 10, w: 100, h: 10, src: '/i/watermark.png' },

		// Right bottom corner.
		{ x: 10, y: 10, src: '/i/watermark.png', rel: FileAPI.Image.RIGHT_BOTTOM }
	])
	.get(function (err/**String*/, img/**HTMLElement*/){

	})
;

get(fn:Function):FileAPI.Image

Get the final image.

fn — complete callback

To work with a webcam, be sure to set FileAPI.media: true.

publish(el:HTMLElement, options:Object, callback:Function):void

Publication of the camera.

el — target
options — { width: 100%, height: 100%, start: true }
callback — the first parameter is a possible error, the second instance of FileAPI.Camera

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, { width: 320, height: 240 }, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		// The webcam is ready, you can use it.
	}
});

start(callback:Function):void

Turn on the camera.

callback — will be called when the camera ready

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, { start: false }, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		// Turn on
		cam.start(function (err){
			if( !err ){
				// The camera is ready for use.
			}
		});
	}
});

Turn off the camera.

Take a picture with the camera.

var el = document.getElementById('cam');
FileAPI.Camera.publish(el, function (err, cam/**FileAPI.Camera*/){
	if( !err ){
		var shot = cam.shot(); // take a picture

		// create thumbnail 100x100
		shot.preview(100).get(function (err, img){
			previews.appendChild(img);
		});

		// and/or
		FileAPI.upload({
			url: '...',
			files: { cam: shot
		});
	}
});

1024 bytes

1048576 bytes

1073741824 bytes

1.0995116e+12 bytes

FileAPI.each(obj:Object|Array, callback:Function[, thisObject:Mixed]):void

Iterate over an object or array, executing a function for each matched element.

obj — array or object
callback — a function to execute for each element.
thisObject — object to use as this when executing callback.

FileAPI.extend(dst:Object, src:Object):Object

Merge the contents of two objects together into the first object.

dst — an object that will receive the new properties
src — an object containing additional properties to merge in.

FileAPI.filter(array:Array, callback:Function[, thisObject:Mixed):Object

Creates a new array with all elements that pass the test implemented by the provided function.

array — original Array
callback — Function to test each element of the array.
thisObject — object to use as this when executing callback.

Multiupload: all browsers that support HTML5 or Flash
Drag'n'Drop upload: files (HTML5) & directories (Chrome 21+)
Chunked file upload (HTML5)
Upload one file: all browsers
Working with Images: IE6+, FF 3.6+, Chrome 10+, Opera 11.1+, Safari 6+
- crop, resize, preview & rotate (HTML5 or Flash)
- auto orientation by exif (HTML5, if include FileAPI.exif.js or Flash)

FileAPI.support.html5:Boolean

HTML5 browser support

FileAPI.support.cors:Boolean

This cross-origin resource sharing is used to enable cross-site HTTP requests.

FileAPI.support.dnd:Boolean

Drag'n'drop events support.

FileAPI.support.flash:Boolean

Availability Flash plugin.

FileAPI.support.canvas:Boolean

Canvas support.

FileAPI.support.dataURI:Boolean

Support dataURI as src for image.

FileAPI.support.chunked:Boolean

Support chunked upload.

Flash is very "buggy" thing :] The server response can not be empty. Therefore, in the event of a successful uploading http status should be only 200 OK.

Flash settings. It is advisable to place flash on the same server where the files will be uploaded.

<script>
	var FileAPI = {
	 	// @default: "./dist/"
		staticPath: '/js/',

		 // @default: FileAPI.staticPath + "FileAPI.flash.swf"
		flashUrl: '/statics/FileAPI.flash.swf',

		// @default: FileAPI.staticPath + "FileAPI.flash.image.swf"
		flashImageUrl: '/statics/FileAPI.flash.image.swf'
	};
</script>
<script src="/js/FileAPI.min.js"></script>

Necessarily make this file on the server. Do not forget to replace youdomain.com on the name of your domain.

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
	<site-control permitted-cross-domain-policies="all"/>
	<allow-access-from domain="youdomain.com" secure="false"/>
	<allow-access-from domain="*.youdomain.com" secure="false"/>
	<allow-http-request-headers-from domain="*" headers="*" secure="false"/>
</cross-domain-policy>

The following sample HTTP POST request is sent from Flash Player to a server-side script if no parameters are specified:

POST /server/ctrl.php HTTP/1.1
Accept: text/*
Content-Type: multipart/form-data;
boundary=----------Ij5ae0ae0KM7GI3KM7
User-Agent: Shockwave Flash
Host: www.youdomain.com
Content-Length: 421
Connection: Keep-Alive
Cache-Control: no-cache

------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Filename"

MyFile.jpg
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Filedata"; filename="MyFile.jpg"
Content-Type: application/octet-stream

[[..FILE_DATA_HERE..]]
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7
Content-Disposition: form-data; name="Upload"

Submit Query
------------Ij5GI3GI3ei4GI3ei4KM7GI3KM7KM7--

By default FileAPI.flash.swf allows access from any domain via Security.allowDomain("*"). This can lead to same origin bypass vulnerability if swf is loaded from the same domain as your critical data. To prevent this, allow only your domains here and rebuild flash.

<script>
(function (ctx, jsonp){
	'use strict';
	var status = {{httpStatus}}, statusText = "{{httpStatusText}}", response = "{{responseBody}}";
	try {
		ctx[jsonp](status, statusText, response);
	} catch (e){
		var data = "{\"id\":\""+jsonp+"\",\"status\":"+status+",\"statusText\":\""+statusText+"\",\"response\":\""+response.replace(/\"/g, '\\\\\"')+"\"}";
		try {
			ctx.postMessage(data, document.referrer);
		} catch (e){}
	}
})(window.parent, '{{request_param_callback}}');
</script>

<!-- or -->

<?php
	include './FileAPI.class.php';

	if( strtoupper($_SERVER['REQUEST_METHOD']) == 'POST' ){
		// Retrieve File List
		$files	= FileAPI::getFiles();

		// ... your logic

		// JSONP callback name
		$jsonp	= isset($_REQUEST['callback']) ? trim($_REQUEST['callback']) : null;

		// Server response: "HTTP/1.1 200 OK"
		FileAPI::makeResponse(array(
			  'status' => FileAPI::OK
			, 'statusText' => 'OK'
			, 'body' => array('count' => sizeof($files))
		), $jsonp);
		exit;
	}
?>

Enable CORS.

<?php
	// Permitted types of request
    header('Access-Control-Allow-Methods: POST, OPTIONS');

    // Describe custom headers
    header('Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Range, Content-Disposition, Content-Type');

    // A comma-separated list of domains
    header('Access-Control-Allow-Origin: ' . $_SERVER['HTTP_ORIGIN']);

	// Allow cookie
	header('Access-Control-Allow-Credentials: true');

    if( $_SERVER['REQUEST_METHOD'] == 'OPTIONS' ){
        exit;
    }

    if( $_SERVER['REQUEST_METHOD'] == 'POST' ){
        // ...
    }
?>

Client and server communicate to each other using the following HTTP headers and status codes.
Client explicitly sets the following headers:

Content-Range: bytes <start-offset>-<end-offset>/<total>
Content-Disposition: attachment; filename=<file-name>

Any other headers are set by a target browser and are not used by client. Library does not provide any facilities to track a file uniqueness across requests, it's left on developer's consideration.
Response codes:

200 - last chunk is uploaded
201 - chunk is successfully saved
416 - range is not acceptable error, recoverable
500 - server error, recoverable

For recoverable errors server tries to resend chunk `chunkUploadRetry` times then fails.

X-Last-Known-Byte: int, library tries to resend chunk from the given offset. Applicable to response codes 200 and 416

All the other codes - fatal error, user's involvement is recommended.

Simple input[type="file"]

<span class="js-fileapi-wrapper" style="position: relative; display: inline-block;">
    <input name="files" type="file" multiple/>
</span>

Stylized button.

<style>
.upload-btn {
    width: 130px;
    height: 25px;
    overflow: hidden;
    position: relative;
    border: 3px solid #06c;
    border-radius: 5px;
    background: #0cf;

}
    .upload-btn:hover {
        background: #09f;
    }
    .upload-btn__txt {
        z-index: 1;
        position: relative;
        color: #fff;
        font-size: 18px;
        font-family: "Helvetica Neue";
        line-height: 24px;
        text-align: center;
        text-shadow: 0 1px 1px #000;
    }
    .upload-btn input {
        top: -10px;
        right: -40px;
        z-index: 2;
        position: absolute;
        cursor: pointer;
        opacity: 0;
        filter: alpha(opacity=0);
        font-size: 50px;
    }
</style>
<div class="js-fileapi-wrapper upload-btn">
    <div class="upload-btn__txt">Upload files</div>
    <input name="files" type="file" multiple />
</div>

Button like link.

<style>
.upload-link {
    color: #36c;
    display: inline-block;
    *zoom: 1;
    *display: inline;
    overflow: hidden;
    position: relative;
    padding-bottom: 2px;
    text-decoration: none;
}
    .upload-link__txt {
        z-index: 1;
        position: relative;
        border-bottom: 1px dotted #36c;
    }
        .upload-link:hover .upload-link__txt {
            color: #f00;
            border-bottom-color: #f00;
        }

    .upload-link input {
        top: -10px;
        right: -40px;
        z-index: 2;
        position: absolute;
        cursor: pointer;
        opacity: 0;
        filter: alpha(opacity=0);
        font-size: 50px;
    }
</style>
<a class="js-fileapi-wrapper upload-link">
    <span class="upload-link__txt">Upload photo</span>
    <input name="photo" type="file" accept="image/*" />
</a>

Installation, testing, assembling

npm install fileapi
cd fileapi
npm install
grunt

#369: * IEMobile

#367: * [flash] allow gif and bmp to resize

#364: * Camera#stop
#363: * support `Blob` in `FileAPI.getInfo`
#361: + upload zero-files

#353: debug mode vs. IE
#352: correct filename via flash-uploading

#346, #342, #344: fixes for XSS into Flash-transport

#322, #308: dnd & safari + $.fn.dnd (store all dropped items)
#319: NodeJS tesing
#317, #313: fixed "malformed entry.name (OSX Unicode NFD)"
#311: fixed "Arithmetic result exceeded 32 bits"

#289: * WebCam & html5 == false
#199, #265: flash fix 2015 error with BitmapData
#177: IE9, IE11 flash.camera remembered settigns
#254: check 'onLoadFnName' before call
#272: fixed `entry.createReader().readEntries`

#253: fixed `proxyXHR.loaded`
#250: + check `disabled`-attr

Two new resize strategies `width` and `height`

#214: iframe transport under IE8
Fixed iframe-transport (remove `disabled`-attr for input)

#240: Fixed `FileAPI.event.dnd.off`

+ #228: check callbacks with regexp
* Updated devDepending
+ #207: support EXIF.Orientation == 4, 5 & 7

+ #176: Add params to the beginning of form
+ #190: Add 204 as a successful response
+ #192: many bugfixes; + `retry` & `multipass` options; + QUnit-tests for BigSizeImage

+ QUnit-tests for iframe-transport
+ `postMessage` for iframe-transport
+ `jsonp: "callback"` option
* resize: `imageTransform.type` rename to `imageTransform.strategy` (!!!)
+ #165 (#140: fix)

+ test: upload headers
+ test: upload + camanjs
+ test: upload + autoOrientation
FileAPI.class.php: + HTTP header Content-Type: application/json
#143: + `FileAPI.flashWebcamUrl` option
* merge v1.2.7
+ `FileAPI.formData: true` option

+ support 'filter' prop in imageTransform

+ FileAPI.Camera (HTML5 and Flash fallback)
+ jquery.fileapi.js, see demo
+ npm support
+ grunt support
+ requirejs support
+ [#80](https://https://github.com/mailru/FileAPI/issues/80): FileAPI.Image.fn.overlay
`imageTransform` — now supports: `crop`, `type`, `quality` and `overlay` properties.
Improved the documentation
+iOS fix (https://github.com/blueimp/JavaScript-Load-Image)
[#121](https://github.com/mailru/FileAPI/issues/121): + FileAPI.`postNameConcat:Function(name, idx)`
[#116](https://github.com/mailru/FileAPI/issues/116): + `cache:false` option for FileAPI.upload

[#91](https://github.com/mailru/FileAPI/issues/91): replace `new Image` to `FileAPI.newImage`
+ FileAPI.withCredentials: true
[#90](https://github.com/mailru/FileAPI/issues/90): Fixed `progress` event
[#105](https://github.com/mailru/FileAPI/issues/105): Fixed `image/jpg` -> `image/jpeg`
[#108](https://github.com/mailru/FileAPI/issues/108): Check width/height before resize by type(min/max)

[#86](#86): Smarter upload recovery
[#87](https://github.com/mailru/FileAPI/issues/87): Fixed upload files into browsers that do not support FormData
Fixed support "accept" attribute for Flash.
Fixed detection of HTML5 support for FireFox 3.6
+ FileAPI.html5 option, default "true"

Fixed auto orientation image by EXIF (Flash)
Fixed image dimensions after rotate (Flash)
[#82](https://github.com/mailru/FileAPI/issues/82): "undefined" data-fields cause exceptions
[#83](https://github.com/mailru/FileAPI/issues/83): Allow requests without files
[#84](#84): Fixed connection abort when waiting for connection recovery

[#77](#77): Fixed flash.abort(), [#75](https://github.com/mailru/FileAPI/issues/75)
- `FileAPI.addMime`
+ `FileAPI.accept` — fallback for flash.

[#67](#67): Added correct httpStatus for upload fail, [#62](#68)
[#68](#68) Added "Content-Type" for chunked upload, [#65](https://github.com/mailru/FileAPI/pull/65)
[#69](#69): Fixed network down recovery
Fixed progress event, [#66](https://github.com/mailru/FileAPI/issues/66)
Increase flash stage size, [#73](#73)
- array index from POST-param "name", [#72](https://github.com/mailru/FileAPI/issues/72)
- dependency on FileAPI.Image for FileAPI.Flash

[#64](#64): Bufixed for [#63](https://github.com/mailru/FileAPI/issues/63)

[#57](#57): Chunked file upload

[#54](https://github.com/mailru/FileAPI/issues/54): added `FileAPI.flashUrl` and `FileAPI.flashImageUrl`

[#51](https://github.com/mailru/FileAPI/issues/51): remove circular references from `file-objects` (Flash transport)
added `changelog`

first release

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