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Firefox 37 was released on March 31st, 2015. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.

Changes for Web developers

Developer Tools

Highlights:

All devtools bugs fixed between Firefox 36 and Firefox 37.

CSS

HTML

  • The value <a rel="noreferrer"> now also works when the link is opened in new tab (bug 1031264).
  • The '.' followed by the extension is now allowed in <input accept>: when used, a file selector filters with this given extension to be proposed to the user (bug 826176).

JavaScript

Interfaces/APIs/DOM

MathML

No change.

SVG

  • SVG2's <marker orient="auto-start-reverse"> has been implemented (bug 1107584).

Audio/Video

No change.

Networking

  • WebSockets now supports the permessage compression method, if the server does support it (bug 792831).

Security

  • The usage of weak protocols or ciphers, like SSL 3.0 and RC4, are now logged in the console, to warn sites that are using it (bug 1092835).
  • The CSP 1.1 referrer directive is now supported (bug 965727).

Changes for add-on and Mozilla developers

Add-on SDK

No change.

XUL

No change.

See also

Older versions

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