Firefox 37 for developers

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

CSS

HTML

  • The value <a rel="noreferrer"> now also works when the link is opened in new tab (Firefox 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 (Firefox bug 826176).

JavaScript

Interfaces/APIs/DOM

MathML

No change.

SVG

Audio/Video

No change.

Networking

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

Security

Changes for add-on and Mozilla developers

Add-on SDK

No change.

XUL

No change.

Older versions