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Showing content from https://github.com/chaijs/pathval below:

chaijs/pathval: Object value retrieval given a string path

Tool for Object value retrieval given a string path for node and the browser.

Pathval is a module which you can use to retrieve or set an Object's property for a given String path.

pathval is available on npm. To install it, type:

You can also use it within the browser; install via npm and use the pathval.js file found within the download. For example:

<script src="./node_modules/pathval/pathval.js"></script>

The primary export of pathval is an object which has the following methods:

• hasProperty(object, name) - Checks whether an object has named property or numeric array index.
• getPathInfo(object, path) - Returns an object with info indicating the value of the parent of that path, the name of the property we're retrieving and its value.
• getPathValue(object, path) - Retrieves the value of a property at a given path inside an object'.
• setPathValue(object, path, value) - Sets the value of a property at a given path inside an object and returns the object in which the property has been set.

var pathval = require('pathval');

var pathval = require('pathval');

var obj = { prop: 'a value' };
pathval.hasProperty(obj, 'prop'); // true

var pathval = require('pathval');

var obj = { earth: { country: 'Brazil' } };
pathval.getPathInfo(obj, 'earth.country'); // { parent: { country: 'Brazil'  }, name: 'country', value: 'Brazil', exists: true }

var pathval = require('pathval');

var obj = { earth: { country: 'Brazil' } };
pathval.getPathValue(obj, 'earth.country'); // 'Brazil'

var pathval = require('pathval');

var obj = { earth: { country: 'Brazil' } };
pathval.setPathValue(obj, 'earth.country', 'USA');

obj.earth.country; // 'USA'

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