JavaScript

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

SpiderMonkey

SpiderMonkey is the project name for the JavaScript engine that powers Firefox.

For more information visit our more up-to-date website at SpiderMonkey.dev. The below information is mostly historical.

Historical Links

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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