Lodash is a JavaScript library which provides utility functions for common programming tasks using the functional programming paradigm.

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Quick Facts Original author(s), Initial release ...

Original author(s)	John-David Dalton
Initial release	April 23, 2012; 11 years ago (2012-04-23)[1]
Stable release	4.17.21 / February 20, 2021; 3 years ago (2021-02-20)[2]
Repository	github.com/lodash/lodash
Written in	JavaScript
Type	JavaScript library
License	MIT
Website	lodash.com

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See also Underscore § History.

Lodash is a fork of Underscore.js.

It joined the Dojo Foundation in 2013,^[3] and via the jQuery Foundation and JS Foundation, is now part of the OpenJS Foundation.^[4]

Lodash is a JavaScript library that helps programmers write more concise and maintainable JavaScript.

It can be broken down into several main areas:

• Utilities: for simplifying common programming tasks such as determining type as well as simplifying math operations.
• Function: simplifying binding, decorating, constraining, throttling, debouncing, currying, and changing the pointer.
• String: conversion functions for performing basic string operations, such as trimming, converting to uppercase, camel case, etc.
• Array: creating, splitting, combining, modifying, and compressing
• Collection: iterating, sorting, filtering, splitting, and building
• Object: accessing, extending, merging, defaults, and transforming
• Seq: chaining, wrapping, filtering, and testing.

It has had multiple releases, so not all functions are available in all implementations. For example, _.chunk has only been available since version 3.0.0.

• Underscore.js
• Prototype.js