As of MediaWiki 1.17 most JavaScript code in MediaWiki is object-oriented and packaged as ResourceLoader modules that other code can depend on. Also, jQuery was introduced in MediaWiki core in MediaWiki 1.16, and loaded by default on every page as of 1.17.

Before MediaWiki 1.16, most JavaScript was in wikibits.js and other files in /skins/common/.

See also

• Manual:JavaScript unit testing
• Compatibility — This page documents which browsers get JavaScript served.
• ResourceLoader
• ResourceLoader/Modules — all modules part of MediaWiki core
• jQuery
• JavaScript code conventions
• JavaScript performance
• Gadget kitchen — how you can write gadgets in JavaScript to modify and extend MediaWiki behavior
• Snippets — collections of random code snippets
• No-JavaScript notes
• The English Wikipedia's article on JavaScript