<!DOCTYPE html><!-- This page is a placeholder for generated extensions api doc. Note:
1) The <head> information in this page is significant, should be uniform
across api docs and should be edited only with knowledge of the
templating mechanism.
3) All <body>.innerHTML is genereated as an rendering step. If viewed in a
browser, it will be re-generated from the template, json schema and
authored overview content.
4) The <body>.innerHTML is also generated by an offline step so that this
page may easily be indexed by search engines.
--><html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="css/ApiRefStyles.css" rel="stylesheet" type="text/css">
<link href="css/print.css" rel="stylesheet" type="text/css" media="print">
<script type="text/javascript" src="../../../third_party/jstemplate/jstemplate_compiled.js">
</script>
<script type="text/javascript" src="js/api_page_generator.js"></script>
<script type="text/javascript" src="js/bootstrap.js"></script>
<script type="text/javascript" src="js/sidebar.js"></script>
<title>chrome.experimental.* APIs - Google Chrome Extensions - Google Code</title></head>
<body> <div id="gc-container" class="labs">
<div id="devModeWarning">
You are viewing extension docs in chrome via the 'file:' scheme: are you expecting to see local changes when you refresh? You'll need run chrome with --allow-file-access-from-files.
</div>
<!-- SUBTEMPLATES: DO NOT MOVE FROM THIS LOCATION -->
<!-- In particular, sub-templates that recurse, must be used by allowing
jstemplate to make a copy of the template in this section which
are not operated on by way of the jsskip="true" -->
<div style="display:none">
<!-- VALUE -->
<div id="valueTemplate">
<dt>
<var>paramName</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span class="enum">enumerated</span>
<span id="typeTemplate">
<span>
<a> Type</a>
</span>
<span>
<span>
array of <span><span></span></span>
</span>
<span>paramType</span>
<span></span>
</span>
</span>
)
</div>
</em>
</dt>
<dd class="todo">
Undocumented.
</dd>
<dd>
Description of this parameter from the json schema.
</dd>
<dd>
This parameter was added in version
<b><span></span></b>.
You must omit this parameter in earlier versions,
and you may omit it in any version. If you require this
parameter, the manifest key
<a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
can ensure that your extension won't be run in an earlier browser version.
</dd>
<!-- OBJECT PROPERTIES -->
<dd>
<dl>
<div>
<div>
</div>
</div>
</dl>
</dd>
<!-- OBJECT METHODS -->
<dd>
<div></div>
</dd>
<!-- OBJECT EVENT FIELDS -->
<dd>
<div></div>
</dd>
<!-- FUNCTION PARAMETERS -->
<dd>
<div></div>
</dd>
</div> <!-- /VALUE -->
<div id="functionParametersTemplate">
<h5>Parameters</h5>
<dl>
<div>
<div>
</div>
</div>
</dl>
</div>
</div> <!-- /SUBTEMPLATES -->
<a id="top"></a>
<div id="skipto">
<a href="#gc-pagecontent">Skip to page content</a>
<a href="#gc-toc">Skip to main navigation</a>
</div>
<!-- API HEADER -->
<table id="header" width="100%" cellspacing="0" border="0">
<tbody><tr>
<td valign="middle"><a href="http://code.google.com/"><img src="images/code_labs_logo.gif" height="43" width="161" alt="Google Code Labs" style="border:0; margin:0;"></a></td>
<td valign="middle" width="100%" style="padding-left:0.6em;">
<form action="http://www.google.com/cse" id="cse" style="margin-top:0.5em">
<div id="gsc-search-box">
<input type="hidden" name="cx" value="002967670403910741006:61_cvzfqtno">
<input type="hidden" name="ie" value="UTF-8">
<input type="text" name="q" value="" size="55">
<input class="gsc-search-button" type="submit" name="sa" value="Search">
<br>
<span class="greytext">e.g. "page action" or "tabs"</span>
</div>
</form>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">google.load("elements", "1", {packages: "transliteration"});</script>
<script type="text/javascript" src="http://www.google.com/coop/cse/t13n?form=cse&t13n_langs=en"></script>
<script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse&lang=en"></script>
</td>
</tr>
</tbody></table>
<div id="codesiteContent" class="">
<a id="gc-topnav-anchor"></a>
<div id="gc-topnav">
<h1>Google Chrome Extensions (<a href="http://code.google.com/labs/">Labs</a>)</h1>
<ul id="home" class="gc-topnav-tabs">
<li id="home_link">
<a href="index.html" title="Google Chrome Extensions home page">Home</a>
</li>
<li id="docs_link">
<a href="docs.html" title="Official Google Chrome Extensions documentation">Docs</a>
</li>
<li id="faq_link">
<a href="faq.html" title="Answers to frequently asked questions about Google Chrome Extensions">FAQ</a>
</li>
<li id="samples_link">
<a href="samples.html" title="Sample extensions (with source code)">Samples</a>
</li>
<li id="group_link">
<a href="http://groups.google.com/a/chromium.org/group/chromium-extensions" title="Google Chrome Extensions developer forum">Group</a>
</li>
</ul>
</div> <!-- end gc-topnav -->
<div class="g-section g-tpl-170">
<!-- SIDENAV -->
<div class="g-unit g-first" id="gc-toc">
<ul>
<li><a href="getstarted.html">Getting Started</a></li>
<li><a href="overview.html">Overview</a></li>
<li><a href="whats_new.html">What's New?</a></li>
<li><h2><a href="devguide.html">Developer's Guide</a></h2>
<ul>
<li>Browser UI
<ul>
<li><a href="browserAction.html">Browser Actions</a></li>
<li><a href="contextMenus.html">Context Menus</a></li>
<li><a href="notifications.html">Desktop Notifications</a></li>
<li><a href="omnibox.html">Omnibox</a></li>
<li><a href="options.html">Options Pages</a></li>
<li><a href="override.html">Override Pages</a></li>
<li><a href="pageAction.html">Page Actions</a></li>
</ul>
</li>
<li>Browser Interaction
<ul>
<li><a href="bookmarks.html">Bookmarks</a></li>
<li><a href="cookies.html">Cookies</a></li>
<li><a href="events.html">Events</a></li>
<li><a href="history.html">History</a></li>
<li><a href="management.html">Management</a></li>
<li><a href="tabs.html">Tabs</a></li>
<li><a href="windows.html">Windows</a></li>
</ul>
</li>
<li>Implementation
<ul>
<li><a href="a11y.html">Accessibility</a></li>
<li><a href="background_pages.html">Background Pages</a></li>
<li><a href="content_scripts.html">Content Scripts</a></li>
<li><a href="xhr.html">Cross-Origin XHR</a></li>
<li><a href="idle.html">Idle</a></li>
<li><a href="i18n.html">Internationalization</a></li>
<li><a href="messaging.html">Message Passing</a></li>
<li><a href="npapi.html">NPAPI Plugins</a></li>
</ul>
</li>
<li>Finishing
<ul>
<li><a href="hosting.html">Hosting</a></li>
<li><a href="external_extensions.html">Other Deployment Options</a></li>
</ul>
</li>
</ul>
</li>
<li><h2><a href="apps.html">Packaged Apps</a></h2></li>
<li><h2><a href="tutorials.html">Tutorials</a></h2>
<ul>
<li><a href="tut_debugging.html">Debugging</a></li>
<li><a href="tut_analytics.html">Google Analytics</a></li>
<li><a href="tut_oauth.html">OAuth</a></li>
</ul>
</li>
<li><h2>Reference</h2>
<ul>
<li>Formats
<ul>
<li><a href="manifest.html">Manifest Files</a></li>
<li><a href="match_patterns.html">Match Patterns</a></li>
</ul>
</li>
<li><a href="permission_warnings.html">Permission Warnings</a></li>
<li><a href="api_index.html">chrome.* APIs</a></li>
<li><a href="api_other.html">Other APIs</a></li>
</ul>
</li>
<li><h2><a href="samples.html">Samples</a></h2></li>
<div class="line"> </div>
<li><h2>More</h2>
<ul>
<li><a href="http://code.google.com/chrome/webstore/docs/index.html">Chrome Web Store</a></li>
<li><a href="http://code.google.com/chrome/apps/docs/developers_guide.html">Hosted Apps</a></li>
<li><a href="themes.html">Themes</a></li>
</ul>
</li>
</ul>
</div>
<script>
initToggles();
</script>
<div class="g-unit" id="gc-pagecontent">
<div id="pageTitle">
<h1 class="page_title">chrome.experimental.* APIs</h1>
</div>
<!-- TABLE OF CONTENTS -->
<div id="toc" style="display: none; ">
<h2>Contents</h2>
<ol>
<li>
<a>h2Name</a>
<ol>
<li>
<a>h3Name</a>
</li>
</ol>
</li>
<li>
<a href="#apiReference">API reference</a>
<ol>
<li>
<a href="#properties">Properties</a>
<ol>
<li>
<a href="#property-anchor">propertyName</a>
</li>
</ol>
</li>
<li>
<a>Methods</a>
<ol>
<li>
<a href="#method-anchor">methodName</a>
</li>
</ol>
</li>
<li>
<a>Events</a>
<ol>
<li>
<a href="#event-anchor">eventName</a>
</li>
</ol>
</li>
<li>
<a href="#types">Types</a>
<ol>
<li>
<a href="#id-anchor">id</a>
</li>
</ol>
</li>
</ol>
</li>
</ol>
</div>
<!-- /TABLE OF CONTENTS -->
<!-- Standard content lead-in for experimental API pages -->
<p id="classSummary" style="display: none; ">
For information on how to use experimental APIs, see the <a href="experimental.html">chrome.experimental.* APIs</a> page.
</p>
<!-- STATIC CONTENT PLACEHOLDER -->
<div id="static"><div id="pageData-name" class="pageData">chrome.experimental.* APIs</div>
<p>
We'd like your <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions/topics">feedback</a>
on the following experimental APIs:
</p>
<ul>
<li>
<a href="experimental.clipboard.html">experimental.clipboard</a></li><li>
<a href="experimental.contentSettings.misc.html">experimental.contentSettings.misc</a></li><li>
<a href="experimental.debugger.html">experimental.debugger</a></li><li>
<a href="experimental.extension.html">experimental.extension</a></li><li>
<a href="experimental.infobars.html">experimental.infobars</a></li><li>
<a href="experimental.processes.html">experimental.processes</a></li><li>
<a href="experimental.proxy.html">experimental.proxy</a></li><li>
<a href="experimental.sidebar.html">experimental.sidebar</a></li><li>
<a href="experimental.tts.html">experimental.tts</a></li><li>
<a href="experimental.webInspector.audits.html">experimental.webInspector.audits</a></li><li>
<a href="experimental.webInspector.inspectedWindow.html">experimental.webInspector.inspectedWindow</a></li><li>
<a href="experimental.webInspector.panels.html">experimental.webInspector.panels</a></li><li>
<a href="experimental.webInspector.resources.html">experimental.webInspector.resources</a></li><li>
<a href="experimental.webNavigation.html">experimental.webNavigation</a></li><li>
<a href="experimental.webRequest.html">experimental.webRequest</a></li>
</ul>
<p class="warning">
<b>Caution:</b>
Don't depend on these experimental APIs.
They might disappear,
and they <em>will</em> change.
Also, the Chrome Developer Dashboard doesn't allow you to
upload extensions that use experimental APIs.
</p>
<h2 id="using">How to use experimental APIs</h2>
<ol>
<li>
Make sure you're using the
<a href="http://www.chromium.org/getting-involved/dev-channel">Dev channel</a>
of Google Chrome.
Although the experimental APIs might work in other versions,
we need your feedback on the latest incarnation of the APIs,
which you can find on the Dev channel.
</li>
<li>
Using the
<a href="http://code.google.com/chrome/extensions/dev/experimental.html">API documentation for the Dev channel</a>,
write the code for your extension.
</li>
<li>
Specify the "experimental"
<a href="manifest.html#permissions">permission</a>
in your extension's manifest, like this:
<pre>"permissions": [
<b>"experimental"</b>,
...
],
</pre>
</li>
<li>
Enable the experimental API in your browser.
You can do this in either of two ways:
<ul>
<li> Go to <b>chrome://flags</b>,
find "Experimental Extension APIs",
click its "Enable" link,
and restart Chrome.
From now on,
unless you return to that page and disable experimental APIs,
you'll be able to run extensions that use experimental APIs.
</li>
<li> Specify the <b>--enable-experimental-extension-apis</b> flag
each time you launch the browser.
On Windows, you can do this by modifying
the properties of the shortcut that you use to launch Google Chrome.
For example:
<pre><em>path_to_chrome.exe</em> <b>--enable-experimental-extension-apis</b></pre>
</li>
</ul>
</li>
<li>
<a href="http://groups.google.com/a/chromium.org/group/chromium-extensions/topics">Give us feedback!</a>
Your comments and suggestions help us
improve the APIs and decide
which ones should move from experimental to supported.
</li>
</ol>
<h2 id="other">More information</h2>
<p>
For information on the standard APIs that extensions can use, see
<a href="api_index.html">chrome.* APIs</a> and
<a href="api_other.html">Other APIs</a>.
</p>
</div>
<!-- API PAGE -->
<div class="apiPage" style="display: none; ">
<a name="apiReference"></a>
<h2>API reference: chrome.apiname </h2>
<!-- PROPERTIES -->
<div class="apiGroup">
<a name="properties"></a>
<h3 id="properties">Properties</h3>
<div>
<a></a>
<h4>getLastError</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span>chrome.extension</span><span>lastError</span>
</div>
<div>
</div>
</div>
</div> <!-- /apiGroup -->
<!-- METHODS -->
<div id="methodsTemplate" class="apiGroup">
<a></a>
<h3>Methods</h3>
<!-- iterates over all functions -->
<div class="apiItem">
<a></a> <!-- method-anchor -->
<h4>method name</h4>
<div class="summary"><span>void</span>
<!-- Note: intentionally longer 80 columns -->
<span>chrome.module.methodName</span>(<span><span>, </span><span></span>
<var><span></span></var></span>)</div>
<div class="description">
<p class="todo">Undocumented.</p>
<p>
A description from the json schema def of the function goes here.
</p>
<!-- PARAMETERS -->
<h4>Parameters</h4>
<dl>
<div>
<div>
</div>
</div>
</dl>
<!-- RETURNS -->
<h4>Returns</h4>
<dl>
<div>
<div>
</div>
</div>
</dl>
<!-- CALLBACK -->
<div>
<div>
<h4>Callback function</h4>
<p>
The callback <em>parameter</em> should specify a function
that looks like this:
</p>
<p>
If you specify the <em>callback</em> parameter, it should
specify a function that looks like this:
</p>
<!-- Note: intentionally longer 80 columns -->
<pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre>
<dl>
<div>
<div>
</div>
</div>
</dl>
</div>
</div>
<!-- MIN_VERSION -->
<p>
This function was added in version <b><span></span></b>.
If you require this function, the manifest key
<a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
can ensure that your extension won't be run in an earlier browser version.
</p>
</div> <!-- /description -->
</div> <!-- /apiItem -->
</div> <!-- /apiGroup -->
<!-- EVENTS -->
<div id="eventsTemplate" class="apiGroup">
<a></a>
<h3>Events</h3>
<!-- iterates over all events -->
<div class="apiItem">
<a></a>
<h4>event name</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span class="subdued">chrome.bookmarks</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>);
</div>
<div class="description">
<p class="todo">Undocumented.</p>
<p>
A description from the json schema def of the event goes here.
</p>
<!-- PARAMETERS -->
<div>
<h4>Parameters</h4>
<dl>
<div>
<div>
</div>
</div>
</dl>
</div>
</div> <!-- /decription -->
</div> <!-- /apiItem -->
</div> <!-- /apiGroup -->
<!-- TYPES -->
<div class="apiGroup">
<a name="types"></a>
<h3 id="types">Types</h3>
<!-- iterates over all types -->
<div class="apiItem">
<a></a>
<h4>type name</h4>
<div>
</div>
</div> <!-- /apiItem -->
</div> <!-- /apiGroup -->
</div> <!-- /apiPage -->
</div> <!-- /gc-pagecontent -->
</div> <!-- /g-section -->
</div> <!-- /codesiteContent -->
<div id="gc-footer" --="">
<div class="text">
<p>
Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>,
the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons
Attribution 3.0 License</a>, and code samples are licensed under the
<a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>.
</p>
<p>
©2011 Google
</p>
<!-- begin analytics -->
<script src="http://www.google-analytics.com/urchin.js" type="text/javascript"></script>
<script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script>
<script type="text/javascript">
// chrome doc tracking
try {
var engdocs = _gat._getTracker("YT-10763712-2");
engdocs._trackPageview();
} catch(err) {}
// code.google.com site-wide tracking
try {
_uacct="UA-18071-1";
_uanchor=1;
_uff=0;
urchinTracker();
}
catch(e) {/* urchinTracker not available. */}
</script>
<!-- end analytics -->
</div>
</div> <!-- /gc-footer -->
</div> <!-- /gc-container -->
</body></html>