Site Compatibility for Firefox 27

  • Revision slug: Mozilla/Firefox/Releases/27/Site_Compatibility
  • Revision title: Site Compatibility for Firefox 27
  • Revision id: 479453
  • Created:
  • Creator: Yoshino
  • Is current revision? No
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Revision Content

{{ draft() }}

Firefox 27 Aurora (pre-Beta) will be released on . While it has been developed to maintain compatibility as much as possible, the new version includes some changes affecting backward compatibility aimed at improving interoperability with the other browsers or following the latest Web standards. Here's the list of such changes — hope this helps whenever you test your sites or applications.

This article only explains the changes that may affect backward compatibility for websites. For the other new features and changes, please read the following documents:

This list may be updated until the release of the final version on , so please check back later. Follow @MozWebCompat on Twitter for further updates.

CSS

-moz-grab and -moz-grabbing have been unprefixed

The unprefixed support of -moz-grab and -moz-grabbing keywords for the {{ cssxref("cursor") }} property has been added. Those prefixed keywords will be removed after a reasonable period of time.

-moz-rgba() and -moz-hsla() have been dropped

The support of the prefixed -moz-rgba() and -moz-hsla() functional notations for color values has been removed. The standard, unprefixed rgba() and hsla() notations should be used instead.

Revision Source

<p>{{ draft() }}</p>
<p>Firefox&nbsp;27 <a href="http://www.mozilla.org/en-US/firefox/aurora/">Aurora</a> (pre-Beta) will be released on <time datetime="2013-11-01">November&nbsp;1, 2014</time>. While it has been developed to maintain compatibility as much as possible, the new version includes some changes affecting backward compatibility aimed at improving interoperability with the other browsers or following the latest Web standards. Here's the list of such changes — hope this helps whenever you test your sites or applications.</p>
<p><strong>This article only explains the changes that may affect backward compatibility for websites</strong>. For the other new features and changes, please read the following documents:</p>
<ul>
  <li><a href="/en-US/docs/Mozilla/Firefox/Releases/27">Firefox&nbsp;27 for developers</a></li>
</ul>
<p>This list may be updated until the release of the final version on <time datetime="2014-01-21">January&nbsp;12, 2014</time>, so please check back later. Follow <a href="https://twitter.com/MozWebCompat">@MozWebCompat</a> on Twitter for further updates.</p>
<section id="sect1">
  <h2 id="CSS">CSS</h2>
  <section id="sect2">
    <h3 id="-moz-grab_and_-moz-grabbing_have_been_unprefixed"><code>-moz-grab</code> and <code>-moz-grabbing</code> have been unprefixed</h3>
    <ul>
      <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=880672">Bug&nbsp;880672 – Unprefix -moz-grab and -moz-grabbing</a></li>
    </ul>
    <p>The unprefixed support of <code>-moz-grab</code> and <code>-moz-grabbing</code> keywords for the {{ cssxref("cursor") }} property has been added. Those prefixed keywords will be removed after a reasonable period of time.</p>
  </section>
  <section id="sect3">
    <h3 id="-moz-rgba()_and_-moz-hsla()_have_been_dropped"><code>-moz-rgba()</code> and <code>-moz-hsla()</code> have been dropped</h3>
    <ul>
      <li><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=893319">Bug&nbsp;893319 – remove -moz-rgba() and -moz-hsla()</a></li>
    </ul>
    <p>The support of the prefixed <code>-moz-rgba()</code> and <code>-moz-hsla()</code> functional notations for <a href="/en-US/docs/Web/CSS/color_value">color values</a> has been removed. The standard, unprefixed <code>rgba()</code> and <code>hsla()</code> notations should be used instead.</p>
  </section>
</section>
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