Javascript cheatsheet

All-inclusive Javascript cheatsheet, Playground, and Visualization

From wilfredinni·Updated June 25, 2026·View on GitHub·

Anyone can forget how to [make character classes](https://www.javascriptcheatsheet.org/cheatsheet/regular-expressions#making-your-own-character-classes) for a regex, [slice a list](https://www.javascriptcheatsheet.org/cheatsheet/array-methods#array-slice) or do a [for loop](https://www.javascriptcheatsheet.org/cheatsheet/control-flow#for-loop). This javascript cheatsheet tries to provide basic reference for beginner and advanced developers, lower the entry barrier for newcomers and help veterans... The project is written primarily in TypeScript, distributed under the MIT License license, first published in 2019. Key topics include: basic-programming, basics, cheat, cheatsheet, javascript.

<p align="center"> <img height="70" src="public/android-chrome-192x192.png"> </p> <h1 align="center">javascript Cheatsheet</h1> <div align="center"> <a href="https://www.javascriptcheatsheet.org/">javascriptcheatsheet.org</a> | <a href="https://github.com/wilfredinni/javascript-cheatsheet/blob/master/src/pages/changelog.md">Changelog</a> </div> <img src="public/screenshots/capture.png">

Anyone can forget how to
make character classes
for a regex, slice a list or do a for loop. This javascript cheatsheet tries to provide basic reference for beginner and advanced developers, lower the entry barrier for newcomers and help veterans refresh the old tricks.