Lo-Dash v1.3.1
A utility library delivering consistency, customization, performance, & extras.
Download
-
Modern builds: Development & Production
-
Compatibility builds: Development & Production
-
Underscore builds: Development & Production
CDN copies are available on cdnjs & jsDelivr.
For smaller file sizes, create custom builds with only the features needed.
Dive in
There’s plenty of documentation, unit tests, & benchmarks.
For a list of upcoming features, check out our roadmap.
Features not in Underscore
- AMD loader support (curl, dojo, requirejs, etc.)
- _(…) supports intuitive chaining
- _.at for cherry-picking collection values
- _.bindKey for binding “lazy” defined methods
- _.cloneDeep for deep cloning arrays & objects
- _.contains accepts a
fromIndex
- _.createCallback for extending callbacks in methods & mixins
- _.debounce & _.throttle accept
options
for more control - _.findIndex & _.findKey for finding indexes & keys
- _.forEach is chainable & supports exiting early
- _.forIn for iterating own & inherited properties
- _.forOwn for iterating own properties
- _.isPlainObject for checking if values are created by
Object
- _.memoize exposes the
cache
of memoized functions - _.merge for a deep _.extend
- _.parseInt for consistent behavior
- _.partialRight for partial application from the right
- _.runInContext for easier mocking
- _.support for flagging environment features
- _.template supports “imports” options & ES6 template delimiters
- _.transform as a powerful alternative to _.reduce for transforming objects
- _.unzip as the inverse of _.zip
- _.where supports deep object comparisons
- _.omit, _.pick, & more accept callbacks
- _.contains, _.toArray, & more accept strings
- _.filter, _.map, & more support “_.pluck” & “_.where” shorthands
Resources
- Posts
- Videos
Support
Tested in Chrome 528, Firefox 222, IE 6-10, Opera 9.25~15, Safari 3-6, Node.js 0.4.8-0.10.15, Narwhal 0.3.2, PhantomJS 1.9.1, RingoJS 0.9, & Rhino 1.7RC5.
Installation & usage
In browsers:
<script src="lodash.js"></script>
Using npm
:
npm install lodash
npm install -g lodash
npm link lodash
var _ = require('lodash');
// or as an Underscore replacement
var _ = require('lodash/dist/lodash.underscore');
Notes:
- Don’t assign values to special variable
_
when in the REPL - If Lo-Dash is installed globally, run
npm link lodash
in your project’s root directory before requiring it - Node.js 0.10.8-0.10.11 have bugs preventing minified builds
In Rhino:
load('lodash.js');
In an AMD loader:
require({
'paths': { 'underscore': 'path/to/lodash' }
},
['underscore'], function(_) {
console.log(_.VERSION);
});
Release Notes
v1.3.1
- Added missing
cache
property to the objects returned bygetObject
- Ensured
maxWait
unit tests pass in Ringo - Increased the
maxPoolSize
value - Optimized
releaseArray
&releaseObject
The full changelog is available here.
BestieJS
Lo-Dash is part of the BestieJS “Best in Class” module collection. This means it promotes solid environment support, ES5+ precedents, unit testing, & plenty of documentation.
Author
John-David Dalton |
Contributors
Blaine Bublitz | Kit Cambridge | Mathias Bynens |