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Lodash


LODASH


A MODERN JAVASCRIPT UTILITY LIBRARY DELIVERING MODULARITY, PERFORMANCE & EXTRAS.

Documentation FP Guide
_.defaults({ 'a': 1 }, { 'a': 3, 'b': 2 });
// → { 'a': 1, 'b': 2 }
_.partition([1, 2, 3, 4], n => n % 2);
// → [[1, 3], [2, 4]]




DOWNLOAD

 * Core build (~4kB gzipped)
 * Full build (~24kB gzipped)
 * CDN copies

Lodash is released under the MIT license & supports modern environments. Review
the build differences & pick one that’s right for you.


INSTALLATION

In a browser:

<script src="lodash.js"></script>

Using npm:

$ npm i -g npm
$ npm i --save lodash

In 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 method categories.
var array = require('lodash/array');
var object = require('lodash/fp/object');
 
// Cherry-pick methods for smaller browserify/rollup/webpack bundles.
var at = require('lodash/at');
var curryN = require('lodash/fp/curryN');

Note:
Install n_ for Lodash use in the Node.js < 6 REPL.


WHY LODASH?

Lodash makes JavaScript easier by taking the hassle out of working with arrays,
numbers, objects, strings, etc. Lodash’s modular methods are great for:

 * Iterating arrays, objects, & strings
 * Manipulating & testing values
 * Creating composite functions


MODULE FORMATS

Lodash is available in a variety of builds & module formats.

 * lodash & per method packages
 * lodash-es, babel-plugin-lodash, & lodash-webpack-plugin
 * lodash/fp
 * lodash-amd


COMPLEMENTARY TOOLS

 * futil-js is a set of functional utilities designed to complement lodash


FURTHER READING

 * Contributing
 * Release Notes
 * Wiki (Changelog, Roadmap, etc.)


SUPPORT

Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, & Node.js
8-12.

Site made with by @veksenn & @zthall.

Maintained by the core team with help from our contributors.