JavaScript

Are you looking for documentation about the JavaScript language? You probably want the Mozilla Developer Network JavaScript site.

SpiderMonkey

THIS SECTION IS OBSOLETE

This section is in parts, or in its entirety, outdated and should be treated with due caution. The browser_specific_settings manifest.json key has replaced the applications key and Fx will prompt a warning (when testing in about:debugging) that applications will be ignored if both are present. For up to date information, visit developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/browser_specific_settings.

This is the project page for SpiderMonkey, Mozilla's JavaScript engine.

• Feature Roadmap
• Technical debt
• JS project pages

Communication

• Mailing lists:
  • dev-tech-js-engine-internals for SpiderMonkey project discussion (You probably want this list!)
  • dev-tech-js-engine for questions about embedding the standalone SpiderMonkey releases
• Matrix https://chat.mozilla.org
  • spidermonkey for all things SpiderMonkey

New Contributors

• "So you're new to SpiderMonkey" is a guide for new contributors
• SpiderMonkey coding style guide
• JavaScript engine hackers and areas of expertise
• MDN's SpiderMonkey C++ documentation

Links

• Old JavaScript project page
• Information on the Treeherder hazard builds (H builds)
• Information on the Treeherder shell builds (SM(...) builds)
• SpiderMonkey hacking tips and tricks