# lodash
**Repository Path**: mirrors_stevemao/lodash
## Basic Information
- **Project Name**: lodash
- **Description**: A utility library delivering consistency, customization, performance, & extras.
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-09-26
- **Last Updated**: 2025-09-21
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# Lo-Dash v3.0.0-pre
A utility library delivering consistency, [customization](http://lodash.com/custom-builds), [performance](http://lodash.com/benchmarks), & [extras](http://lodash.com/#features).
## Documentation
* [API Documentation](http://lodash.com/docs)
* [DevDocs – *a searchable interface for our documentation*](http://devdocs.io/lodash/)
## Download
Review the [build differences](https://github.com/lodash/lodash/wiki/build-differences) & pick the one that’s right for you.
* [Modern build](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.js) ([minified](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.min.js))
For new environments like Chrome, Firefox, IE ≥ 9, & Safari ≥ 5.1
* [Compatibility build](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.compat.js) ([minified](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.compat.min.js))
For new & old environments like IE ≤ 8 & PhantomJS
* [Underscore build](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.underscore.js) ([minified](https://raw.github.com/lodash/lodash/2.4.1/dist/lodash.underscore.min.js))
A drop-in replacement for [Underscore v1.6.0](http://underscorejs.org/#1.6.0)
CDN copies are available on [cdnjs](http://cdnjs.com/libraries/lodash.js/) & [jsDelivr](http://www.jsdelivr.com/#!lodash).
Create [custom builds](http://lodash.com/custom-builds) with only the features you need.
Love modules? We’ve got you covered with [lodash-amd](https://github.com/lodash/lodash-amd/tree/2.4.1), [lodash-node](https://npmjs.org/package/lodash-node), & [npm packages](https://npmjs.org/browse/keyword/lodash-modularized) per method.
## Dive in
Check out our [unit tests](http://lodash.com/tests), [benchmarks](http://lodash.com/benchmarks), [changelog](https://github.com/lodash/lodash/wiki/Changelog), [roadmap](https://github.com/lodash/lodash/wiki/Roadmap), as well as [community created podcasts, posts, & videos](https://github.com/lodash/lodash/wiki/Resources).
## Installation
In a browser:
```html
```
In an AMD loader:
```js
require(['lodash'], function(_) {/*…*/});
```
Using npm:
```bash
$ npm i --save lodash
$ {sudo -H} npm i -g lodash
$ npm ln lodash
```
In Node.js:
```js
var _ = require('lodash');
// or as Underscore
var _ = require('lodash-underscore');
```
**Note:**
Don’t assign values to the [special variable](http://nodejs.org/api/repl.html#repl_repl_features) `_` when in the REPL
## Features *not* in Underscore
* ~100% [code coverage](https://coveralls.io/r/lodash)
* Module bundles for [AMD](https://github.com/lodash/lodash-amd/tree/2.4.1) & [Node.js](https://npmjs.org/package/lodash-node) as well as [npm packages](https://npmjs.org/browse/keyword/lodash-modularized)
* Follows [semantic versioning](http://semver.org/) for releases
* [_(…)](http://lodash.com/docs#_) supports intuitive chaining
* [_.at](http://lodash.com/docs#at) for cherry-picking collection values
* [_.attempt](http://lodash.com/docs#attempt) to execute functions which may error without a try-catch
* [_.before](http://lodash.com/docs#before) to complement [_.after](http://lodash.com/docs#after)
* [_.bindKey](http://lodash.com/docs#bindKey) for binding [*“lazy”*](http://michaux.ca/articles/lazy-function-definition-pattern) defined methods
* [_.chunk](http://lodash.com/docs#chunk) for splitting an array into chunks of a given size
* [_.clone](http://lodash.com/docs#clone) supports shallow cloning of `Date` & `RegExp` objects
* [_.cloneDeep](http://lodash.com/docs#cloneDeep) for deep cloning arrays & objects
* [_.contains](http://lodash.com/docs#contains) accepts a `fromIndex`
* [_.create](http://lodash.com/docs#create) for easier object inheritance
* [_.curry](http://lodash.com/docs#curry) & [_.curryRight](http://lodash.com/docs#curryRight) for creating [curried](http://hughfdjackson.com/javascript/why-curry-helps/) functions
* [_.debounce](http://lodash.com/docs#debounce) & [_.throttle](http://lodash.com/docs#throttle) are cancelable & accept options for more control
* [_.findIndex](http://lodash.com/docs#findIndex) & [_.findKey](http://lodash.com/docs#findKey) for finding indexes & keys
* [_.flow](http://lodash.com/docs#flow) to complement [_.flowRight](http://lodash.com/docs#vlowRight) (a.k.a `_.compose`)
* [_.forEach](http://lodash.com/docs#forEach) supports exiting early
* [_.forIn](http://lodash.com/docs#forIn) for iterating all enumerable properties
* [_.forOwn](http://lodash.com/docs#forOwn) for iterating own properties
* [_.isError](http://lodash.com/docs#isError) to check for error objects
* [_.isNative](http://lodash.com/docs#isNative) to check for native functions
* [_.isPlainObject](http://lodash.com/docs#isPlainObject) to check for objects created by `Object`
* [_.keysIn](http://lodash.com/docs#keysIn) & [_.valuesIn](http://lodash.com/docs#valuesIn) for getting keys and values of all enumerable properties
* [_.mapValues](http://lodash.com/docs#mapValues) for [mapping](http://lodash.com/docs#map) values to an object
* [_.merge](http://lodash.com/docs#merge) for a deep [_.extend](http://lodash.com/docs#extend)
* [_.parseInt](http://lodash.com/docs#parseInt) for consistent behavior
* [_.pull](http://lodash.com/docs#pull), [_.pullAt](http://lodash.com/docs#pullAt), & [_.remove](http://lodash.com/docs#remove) for mutating arrays
* [_.random](http://lodash.com/docs#random) supports returning floating-point numbers
* [_.runInContext](http://lodash.com/docs#runInContext) for collisionless mixins & easier mocking
* [_.slice](http://lodash.com/docs#slice) for creating subsets of array-like values
* [_.sortBy](http://lodash.com/docs#sortBy) supports sorting by multiple properties
* [_.support](http://lodash.com/docs#support) for flagging environment features
* [_.template](http://lodash.com/docs#template) supports [*“imports”*](http://lodash.com/docs#templateSettings_imports) options & [ES6 template delimiters](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-template-literal-lexical-components)
* [_.transform](http://lodash.com/docs#transform) as a powerful alternative to [_.reduce](http://lodash.com/docs#reduce) for transforming objects
* [_.where](http://lodash.com/docs#where) supports deep object comparisons
* [_.xor](http://lodash.com/docs#xor) to complement [_.difference](http://lodash.com/docs#difference), [_.intersection](http://lodash.com/docs#intersection), & [_.union](http://lodash.com/docs#union)
* [_.bind](http://lodash.com/docs#bind), [_.curry](http://lodash.com/docs#curry), [_.partial](http://lodash.com/docs#partial), &
[more](http://lodash.com/docs "_.bindKey, _.curryRight, _.partialRight") support argument placeholders
* [_.capitalize](http://lodash.com/docs#capitalize), [_.trim](http://lodash.com/docs#trim), &
[more](http://lodash.com/docs "_.camelCase, _.endsWith, _.escapeRegExp, _.kebabCase, _.pad, _.padLeft, _.padRight, _.repeat, _.snakeCase, _.startsWith, _.trimLeft, _.trimRight, _.trunc") string methods
* [_.clone](http://lodash.com/docs#clone), [_.isEqual](http://lodash.com/docs#isEqual), &
[more](http://lodash.com/docs "_.assign, _.cloneDeep, _.merge") accept callbacks
* [_.contains](http://lodash.com/docs#contains), [_.toArray](http://lodash.com/docs#toArray), &
[more](http://lodash.com/docs "_.at, _.countBy, _.every, _.filter, _.find, _.findLast, _.forEach, _.forEachRight, _.groupBy, _.indexBy, _.invoke, _.map, _.max, _.min, _.partition, _.pluck, _.reduce, _.reduceRight, _.reject, _.shuffle, _.size, _.some, _.sortBy") accept strings
* [_.dropWhile](http://lodash.com/docs#dropWhile), [_.takeWhile](http://lodash.com/docs#takeWhile), &
[more](http://lodash.com/docs "_.drop, _.dropRightWhile, _.take, _.takeRightWhile") to complement [_.first](http://lodash.com/docs#first), [_.initial](http://lodash.com/docs#initial), [_.last](http://lodash.com/docs#last), & [_.rest](http://lodash.com/docs#rest)
* [_.findLast](http://lodash.com/docs#findLast), [_.findLastIndex](http://lodash.com/docs#findLastIndex), &
[more](http://lodash.com/docs "_.findLastKey, _.flowRight, _.forEachRight, _.forInRight, _.forOwnRight, _.partialRight") right-associative methods
## Support
Tested in Chrome (19, 36-37), Firefox (3, 20, 30-31), IE 6-11, Opera 22-23, Safari 5-7, Node.js 0.8.26~0.10.30, PhantomJS 1.9.7, RingoJS 0.9, & Rhino 1.7RC5.
Automated browser test runs [are available](https://saucelabs.com/u/lodash) as well as CI runs for [lodash](https://travis-ci.org/lodash/lodash/), [lodash-cli](https://travis-ci.org/lodash/lodash-cli/), [lodash-amd](https://travis-ci.org/lodash/lodash-amd/), [lodash-node](https://travis-ci.org/lodash/lodash-node/), & [grunt-lodash](https://travis-ci.org/lodash/grunt-lodash). Special thanks to [Sauce Labs](https://saucelabs.com/) for providing automated browser testing.
## Author
| [](https://twitter.com/jdalton "Follow @jdalton on Twitter") |
|---|
| [John-David Dalton](http://allyoucanleet.com/) |
## Contributors
| [](https://twitter.com/blainebublitz "Follow @BlaineBublitz on Twitter") | [](https://twitter.com/kitcambridge "Follow @kitcambridge on Twitter") | [](https://twitter.com/mathias "Follow @mathias on Twitter") |
|---|---|---|
| [Blaine Bublitz](http://www.iceddev.com/) | [Kit Cambridge](http://kitcambridge.be/) | [Mathias Bynens](http://mathiasbynens.be/) |