_.assign({ 'a': 1 }, { 'b': 2 }, { 'c': 3 });
// → { 'a': 1, 'b': 2, 'c': 3 }
_.map([1, 2, 3], function(n) { return n * 3; });
// → [3, 6, 9]Lodash is released under the MIT license & supports modern environments.
Review the build differences & pick one that’s right for you.
In a browser:
<script src="lodash.js"></script>Using npm:
$ {sudo -H} npm i -g npm
$ npm i --save lodashIn Node.js:
// Load the full build.
var _ = require('lodash');
// Load the core build.
var _ = require('lodash/core');
// Load the fp build for immutable auto-curried iteratee-first data-last methods.
var fp = require('lodash/fp');
// Load a method category.
var array = require('lodash/array');
var object = require('lodash/fp/object');
// Load a single method for smaller builds with browserify/rollup/webpack.
var chunk = require('lodash/chunk');
var extend = require('lodash/fp/extend');Note:
Don’t assign values to the special variable _ when in the REPL.
Install n_ for a REPL that includes lodash by default.
Lodash makes JavaScript easier by taking the hassle out of working with arrays,
numbers, objects, strings, etc. Lodash’s modular methods are great for:
Lodash is available in a variety of builds & module formats.
Tested in Chrome 48-49, Firefox 44-45, IE 9-11, Edge 13, Safari 8-9, Node.js 0.10-6 & PhantomJS 1.9.8.