Revision 346327 of Firefox 21 for developers

  • Revision slug: Firefox_21_for_developers
  • Revision title: Firefox 21 for developers
  • Revision id: 346327
  • Created:
  • Creator: teoli
  • Is current revision? No
  • Comment

Revision Content

{{ draft() }}

{{ ReleaseChannelInfo("21", "21", "Mai 2013", "Nightly") }}

Want to help document Firefox 21? See the list of bugs that need to be written about and pitch in!

Changes for Web developers

HTML

  • The {{htmlattrxref("scope", "style")}} attribute has been added to the {{HTMLElement("style")}} element. It allows to include styles that are isolated from the rest of the document. Such styles can be selected using the {{cssxref(":scope")}} CSS pseudo-element introduced in Firefox 20. ({{bug("508725")}}).

JavaScript

CSS

DOM

Changes for add-on and Mozilla developers

See also

Older versions

{{Firefox_for_developers('20')}}

Revision Source

<p>{{ draft() }}</p>
<p>{{ ReleaseChannelInfo("21", "21", "Mai 2013", "Nightly") }}</p>
<p>Want to help document Firefox 21? See the <a class="external" href="http://beta.elchi3.de/doctracker/#list=fx&amp;version=21.0">list of bugs that need to be written about</a> and pitch in!</p>
<h2 id="Changes_for_Web_developers">Changes for Web developers</h2>
<h3 id="HTML">HTML</h3>
<ul>
  <li>The {{htmlattrxref("scope", "style")}} attribute has been added to the {{HTMLElement("style")}} element. It allows to include styles that are isolated from the rest of the document. Such styles can be selected using the {{cssxref(":scope")}} CSS pseudo-element introduced in Firefox 20. ({{bug("508725")}}).</li>
</ul>
<h3 id="JavaScript">JavaScript</h3>
<h3 id="CSS">CSS</h3>
<h3 id="DOM">DOM</h3>
<h2 id="Changes_for_add-on_and_Mozilla_developers">Changes for add-on and Mozilla developers</h2>
<h2 id="See_also">See also</h2>
<ul>
  <li><a href="http://www.mozilla.org/en-US/firefox/21.0a1/nightlynotes/">Firefox&nbsp;21 Aurora Release Notes</a> (not yet available)</li>
  <li><a href="/en-US/docs/Site_Compatibility_for_Firefox_21">Site Compatibility for Firefox 21</a></li>
</ul>
<h3 id="Older_versions">Older versions</h3>
<p>{{Firefox_for_developers('20')}}</p>
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