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Revision 39508 of Components.utils.unload

  • Revision slug: Components.utils.unload
  • Revision title: Components.utils.unload
  • Revision id: 39508
  • Created:
  • Creator: Sheppy
  • Is current revision? No
  • Comment 19 words added, 6 words removed
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Revision Content

{{ Gecko_minversion_header("7.0") }}

This method was introduced in Firefox 7 and is used to unload JavaScript code modules.

Once this method has been called, references to the module will continue to work but any subsequent import of the module will reload it and give a new reference. If the JavaScript code module has not yet been imported then this method will do nothing.

Syntax

Components.utils.unload( url );

Parameters

url
The "resource://" URL of the script to unload. This must be the same URL that was used to load the script.

Example

You can unload XPCOMUtils.jsm using the following line of code:

Components.utils.unload("resource://gre/modules/XPCOMUtils.jsm");

See also

  • {{ bug("481603") }}
  • The documentation in {{ Source("js/src/xpconnect/idl/xpccomponents.idl", "xpccomponents.idl") }}
  • The tests in {{ Source("js/src/xpconnect/tests/unit/") }}

Revision Source

<p>{{ Gecko_minversion_header("7.0") }}</p>
<p>This method was introduced in <a href="/en/Firefox_7_for_developers" title="en/Firefox_7_for_developers">Firefox 7</a> and is used to unload <a href="/en/JavaScript_code_modules" title="en/JavaScript code modules">JavaScript code modules</a>.</p>
<p>Once this method has been called, references to the module will continue to work but any subsequent import of the module will reload it and give a new reference. If the JavaScript code module has not yet been imported then this method will do nothing.</p>
<h3 name="Syntax">Syntax</h3>
<pre>Components.utils.unload( <em>url</em> );
</pre>
<h3 name="Parameters">Parameters</h3>
<dl> <dt><code>url</code></dt> <dd>The "resource://" URL of the script to unload. This must be the same URL that was used to load the script.</dd>
</dl>
<h3 name="Example">Example</h3>
<p>You can unload XPCOMUtils.jsm using the following line of code:</p>
<pre class="eval">Components.utils.unload("<span class="nowiki">resource://gre/modules/XPCOMUtils.jsm</span>");
</pre>
<h3 name="Additional_Resources">See also</h3>
<ul> <li>{{ bug("481603") }}</li> <li>The documentation in {{ Source("js/src/xpconnect/idl/xpccomponents.idl", "xpccomponents.idl") }}</li> <li>The tests in {{ Source("js/src/xpconnect/tests/unit/") }}</li>
</ul>
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