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|
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<div class="g-unit" id="gc-pagecontent">
<div id="pageTitle">
<h1 class="page_title">chrome.debugger</h1>
</div>
<!-- TABLE OF CONTENTS -->
<div id="toc">
<h2>Contents</h2>
<ol>
<li>
<a href="#manifest">Notes</a>
<ol>
</ol>
</li><li>
<a href="#manifest">Manifest</a>
<ol>
</ol>
</li><li>
<a href="#examples">Examples</a>
<ol>
</ol>
</li>
<li>
<a href="#apiReference">API reference: chrome.debugger</a>
<ol>
<li>
<a href="#global-methods">Methods</a>
<ol>
<li>
<a href="#method-attach">attach</a>
</li><li>
<a href="#method-detach">detach</a>
</li><li>
<a href="#method-sendCommand">sendCommand</a>
</li>
</ol>
</li>
<li>
<a href="#global-events">Events</a>
<ol>
<li>
<a href="#event-onDetach">onDetach</a>
</li><li>
<a href="#event-onEvent">onEvent</a>
</li>
</ol>
</li>
<li>
<a href="#types">Types</a>
<ol>
<li>
<a href="#type-Debuggee">Debuggee</a>
<ol>
</ol>
</li>
</ol>
</li>
</ol>
</li>
</ol>
</div>
<!-- /TABLE OF CONTENTS -->
<!-- Standard content lead-in for experimental API pages -->
<!-- STATIC CONTENT PLACEHOLDER -->
<div id="static"><!-- BEGIN AUTHORED CONTENT -->
<h2 id="manifest">Notes</h2>
<p>
Debugger API serves as an alternate transport for Chrome's
<a href="http://code.google.com/chrome/devtools/docs/remote-debugging.html">
remote debugging protocol</a>. Use <code>chrome.debugger</code>
to attach to one or more tabs to instrument network interaction, debug
JavaScript, mutate the DOM and CSS, etc. Use the Debuggee tabId to target tabs
with sendCommand and route events by <code>tabId</code> from onEvent callbacks.
</p>
<p>
As of today, attaching to the tab by means of the debugger API
and using embedded Chrome DevTools with that tab are mutually exclusive.
If user invokes Chrome DevTools while extension is attached to the tab,
debugging session is terminated. Extension can re-establish it later.
</p>
<h2 id="manifest">Manifest</h2>
<p>
You must declare the "debugger" permission in your extension's manifest
to use this API.
</p>
<pre>{
"name": "My extension",
...
<b> "permissions": [
"debugger",
]</b>,
...
}</pre>
<h2 id="examples">Examples</h2>
<p>
You can find samples of this API in
<a href="samples.html#debugger">Samples</a>.
</p>
<!-- END AUTHORED CONTENT -->
</div>
<!-- API PAGE -->
<div class="apiPage">
<a name="apiReference"></a>
<h2>API reference: chrome.debugger</h2>
<!-- PROPERTIES -->
<!-- /apiGroup -->
<!-- METHODS -->
<div id="methodsTemplate" class="apiGroup">
<a name="global-methods"></a>
<h3>Methods</h3>
<!-- iterates over all functions -->
<div class="apiItem">
<a name="method-attach"></a> <!-- method-anchor -->
<h4>attach</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span>chrome.debugger.attach</span>(<span class="null"><span>Debuggee</span>
<var><span>target</span></var></span><span class="null"><span>, </span><span>string</span>
<var><span>requiredVersion</span></var></span><span class="optional"><span>, </span><span>function</span>
<var><span>callback</span></var></span>)</div>
<div class="description">
<p>Attaches debugger to the given target.</p>
<!-- PARAMETERS -->
<h4>Parameters</h4>
<dl>
<div>
<div>
<dt>
<var>target</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<a href="debugger.html#type-Debuggee">Debuggee</a>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Debugging target to which you want to attach.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>requiredVersion</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<span>string</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Required debugging protocol version ("0.1"). One can only attach to the debuggee with matching major version and greater or equal minor version. List of the protocol versions can be obtained <a href="http://code.google.com/chrome/devtools/docs/remote-debugging.html">here</a>.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>callback</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>function</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Called once the attach operation succeeds or fails. Callback receives no arguments. If the attach fails, <a href="extension.html#property-lastError">chrome.extension.lastError</a> will be set to the error message.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
<!-- RETURNS -->
<dl>
</dl>
<!-- CALLBACK -->
<div>
<div>
<h4>Callback function</h4>
<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></span>) <span class="subdued">{...}</span>;</pre>
<dl>
</dl>
</div>
</div>
<!-- MIN_VERSION -->
</div> <!-- /description -->
</div><div class="apiItem">
<a name="method-detach"></a> <!-- method-anchor -->
<h4>detach</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span>chrome.debugger.detach</span>(<span class="null"><span>Debuggee</span>
<var><span>target</span></var></span><span class="optional"><span>, </span><span>function</span>
<var><span>callback</span></var></span>)</div>
<div class="description">
<p>Detaches debugger from the given target.</p>
<!-- PARAMETERS -->
<h4>Parameters</h4>
<dl>
<div>
<div>
<dt>
<var>target</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<a href="debugger.html#type-Debuggee">Debuggee</a>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Debugging target from which you want to detach.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>callback</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>function</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Called once the detach operation succeeds or fails. Callback receives no arguments. If the detach fails, <a href="extension.html#property-lastError">chrome.extension.lastError</a> will be set to the error message.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
<!-- RETURNS -->
<dl>
</dl>
<!-- CALLBACK -->
<div>
<div>
<h4>Callback function</h4>
<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></span>) <span class="subdued">{...}</span>;</pre>
<dl>
</dl>
</div>
</div>
<!-- MIN_VERSION -->
</div> <!-- /description -->
</div><div class="apiItem">
<a name="method-sendCommand"></a> <!-- method-anchor -->
<h4>sendCommand</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span>chrome.debugger.sendCommand</span>(<span class="null"><span>Debuggee</span>
<var><span>target</span></var></span><span class="null"><span>, </span><span>string</span>
<var><span>method</span></var></span><span class="optional"><span>, </span><span>object</span>
<var><span>params</span></var></span><span class="optional"><span>, </span><span>function</span>
<var><span>callback</span></var></span>)</div>
<div class="description">
<p>Sends given command to the debugging target.</p>
<!-- PARAMETERS -->
<h4>Parameters</h4>
<dl>
<div>
<div>
<dt>
<var>target</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<a href="debugger.html#type-Debuggee">Debuggee</a>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Debugging target to which you want to send the command.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>method</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<span>string</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Method name. Should be one of the methods defined by the <a href="http://code.google.com/chrome/devtools/docs/remote-debugging.html">remote debugging protocol</a>.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>params</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>object</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>JSON object with request parameters. This object must conform to the remote debugging params scheme for given method.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>callback</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>function</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Response body. If an error occurs while posting the message, the callback will be called with no arguments and <a href="extension.html#property-lastError">chrome.extension.lastError</a> will be set to the error message.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
<!-- RETURNS -->
<dl>
</dl>
<!-- CALLBACK -->
<div>
<div>
<h4>Callback function</h4>
<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>object result</span>) <span class="subdued">{...}</span>;</pre>
<dl>
<div>
<div>
<dt>
<var>result</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>object</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>JSON object with the response. Structure of the response varies depending on the method and is defined by the remote debugging protocol.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
</div>
</div>
<!-- MIN_VERSION -->
</div> <!-- /description -->
</div> <!-- /apiItem -->
</div> <!-- /apiGroup -->
<!-- EVENTS -->
<div id="eventsTemplate" class="apiGroup">
<a name="global-events"></a>
<h3>Events</h3>
<!-- iterates over all events -->
<div class="apiItem">
<a name="event-onDetach"></a>
<h4>onDetach</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span class="subdued">chrome.debugger.</span><span>onDetach</span><span class="subdued">.addListener</span>(function(<span>Debuggee source</span>) <span class="subdued">{...}</span><span></span>);
</div>
<div class="description">
<p>Fired when browser terminates debugging session for the tab. This happens when either the tab is being closed or Chrome DevTools is being invoked for the attached tab.</p>
<!-- LISTENER PARAMETERS -->
<div>
<h4>Listener parameters</h4>
<dl>
<div>
<div>
<dt>
<var>source</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<a href="debugger.html#type-Debuggee">Debuggee</a>
</span>
</span>
)
</div>
</em>
</dt>
<dd>The debuggee that was detached.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
</div>
<!-- EXTRA PARAMETERS -->
<!-- LISTENER RETURN VALUE -->
<dl>
</dl>
</div> <!-- /description -->
</div><div class="apiItem">
<a name="event-onEvent"></a>
<h4>onEvent</h4>
<div class="summary">
<!-- Note: intentionally longer 80 columns -->
<span class="subdued">chrome.debugger.</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Debuggee source, string method, object params</span>) <span class="subdued">{...}</span><span></span>);
</div>
<div class="description">
<p>Fired whenever debugging target issues instrumentation event.</p>
<!-- LISTENER PARAMETERS -->
<div>
<h4>Listener parameters</h4>
<dl>
<div>
<div>
<dt>
<var>source</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<a href="debugger.html#type-Debuggee">Debuggee</a>
</span>
</span>
)
</div>
</em>
</dt>
<dd>The debuggee that generated this event.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>method</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<span>string</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Method name. Should be one of the notifications defined by the <a href="http://code.google.com/chrome/devtools/docs/remote-debugging.html">remote debugging protocol</a>.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div><div>
<div>
<dt>
<var>params</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span class="optional">optional</span>
<span id="typeTemplate">
<span>
<span>object</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>JSON object with the response. Structure of the response varies depending on the method and is defined by the remote debugging protocol.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
</div>
<!-- EXTRA PARAMETERS -->
<!-- LISTENER RETURN VALUE -->
<dl>
</dl>
</div> <!-- /description -->
</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 name="type-Debuggee"></a>
<h4>Debuggee</h4>
<div>
<dt>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<span>object</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>Debuggee identifier.</dd>
<!-- OBJECT PROPERTIES -->
<dd>
<dl>
<div>
<div>
<dt>
<var>tabId</var>
<em>
<!-- TYPE -->
<div style="display:inline">
(
<span id="typeTemplate">
<span>
<span>integer</span>
</span>
</span>
)
</div>
</em>
</dt>
<dd>The id of the tab which you intend to debug.</dd>
<!-- OBJECT PROPERTIES -->
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div>
</dl>
</dd>
<!-- OBJECT METHODS -->
<!-- OBJECT EVENT FIELDS -->
<!-- FUNCTION PARAMETERS -->
</div>
</div> <!-- /apiItem -->
</div> <!-- /apiGroup -->
</div> <!-- /apiPage -->
</div> <!-- /gc-pagecontent -->
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</div> <!-- /codesiteContent -->
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