src/cm/media/js/lib/yui/yui_3.0.0b1/examples/profiler/profiler-object-example.html
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<div id="pagetitle"><h1>YUI Library Examples: Profiler: Object Profiling Example</h1></div>
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<div id="bar-note"><p><strong>Note:</strong> This is YUI 3.x. Looking for <a href="http://developer.yahoo.com/yui/">YUI 2.x</a>?</p></div>
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<div class="yui-u first example" id="main">
<h2>Profiler: Object Profiling Example</h2>
<div id="example" class="promo">
<p>
<p>This example shows using the Profiler on all methods in an object. It uses the <code>Y.DOM</code> object
as the object to be profiled.</p> </p>
<div class="module example-container ">
<div id="example-canvas" class="bd">
<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
<div class="bar">div class="bar"</div>
<div class="bar-baz">div class="bar-baz"</div>
<div class="bar ">div class="bar "</div>
<div class=" bar ">div class=" bar "</div>
<div class="bar baz">div class=" bar baz"</div>
<div class="bar2 baz">div class=" bar2 baz"</div>
<div class="foo">div class="foo"</div>
<div class="foo" id="bar">div class="foo" id="bar"</div>
<div class="foo bar baz">div class="foo bar baz"</div>
<p class="bar">p class="bar"</p>
<button id="demo-run">run</button>
<script type="text/javascript">
YUI({base:"../../build/", timeout: 10000, filter:"debug", logInclude: {profiler:true, example:true}}).use("node", "profiler",function (Y) {
Y.Node.get('#demo-run').on('click', function(){
Y.Profiler.registerObject("Y.Node", Y.Node);
Y.Profiler.registerObject("Y.DOM", Y.DOM);
var results = Y.Node.all('.bar');
results.addClass("newclass");
var report = Y.Profiler.getFullReport(function(data){
return data.calls > 0;
});
Y.Profiler.unregisterObject("Y.Node");
Y.Profiler.unregisterObject("Y.DOM");
//output results
var msg = "";
for (var func in report){
msg += (func + "(): Called " + report[func].calls + " times. Avg: " +
report[func].avg + ", Min: " + report[func].min + ", Max: " + report[func].max) + "\n";
}
alert(msg);
});
});
</script>
<!--END SOURCE CODE FOR EXAMPLE =============================== -->
</div>
</div>
</div>
<h2 class="first">Object Profiling Example</h2>
<p>To illustrate using the Profiler on objects, the <code>Y.DOM</code> and <code>Y.Node</code> objects are registered for profiling. This means
that all of the methods on these objects are being profiled. To
illustrate their use, a number of demo elements are added to the markup:</p>
<textarea name="code" class="HTML" cols="60" rows="1">
<div class="bar">div class="bar"</div>
<div class="bar-baz">div class="bar-baz"</div>
<div class="bar ">div class="bar "</div>
<div class=" bar ">div class=" bar "</div>
<div class="bar baz">div class=" bar baz"</div>
<div class="bar2 baz">div class=" bar2 baz"</div>
<div class="foo">div class="foo"</div>
<div class="foo" id="bar">div class="foo" id="bar"</div>
<div class="foo bar baz">div class="foo bar baz"</div>
<p class="bar">p class="bar"</p>
<button id="demo-run">run</button>
</textarea>
<p>The button is used to run the example. The function being called when the button is clicked is assigned by first
retrieving a <code>Node</code> instance for the button and then using the <code>on</code> method:</p>
<textarea name="code" class="JScript" cols="60" rows="1">
<script type="text/javascript">
YUI({base:"../../build/", timeout: 10000, filter:"debug", logInclude: {profiler:true, example:true}}).use("node", "profiler", function (Y) {
Y.Node.get('#demo-run').on('click', function(){
Y.Profiler.registerObject("Y.Node", Y.Node);
Y.Profiler.registerObject("Y.DOM", Y.DOM);
var results = Y.Node.all('.bar');
results.addClass("newclass");
var report = Y.Profiler.getFullReport(function(data){
return data.calls > 0;
});
Y.Profiler.unregisterObject("Y.Node");
Y.Profiler.unregisterObject("Y.DOM");
//output results
var msg = "";
for (var func in report){
msg += (func + "(): Called " + report[func].calls + " times. Avg: " +
report[func].avg + ", Min: " + report[func].min + ", Max: " + report[func].max) + "\n";
}
alert(msg);
});
});
</script>
</textarea>
<p>The function begins be registering <code>Y.DOM</code> and <code>Y.Node</code> with the Profiler. Note that since these objects don't
exist in the global scope, the second argument is necessary for <code>registerObject()</code>. Then, the <code>Y.Node.all()</code>
method is called to retrieve nodes for each element with a class of <code>bar</code>. The result of this operation is a <code>NodeList</code>
object, on which the <code>addClass()</code> method is called. After that, the full report is returned and the objects are unregistered. The last
step is to output all of the information that was collected. Even though there's only two methods called explicitly in this example,
the profiled data indicates that several other methods on <code>Y.DOM</code> and <code>Y.Node</code> were called internally to accomplish the
tasks.</p>
</div>
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<div id="examples" class="mod box4">
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<h4>
Profiler Examples:</h4>
</div>
<div class="bd">
<ul>
<li><a href='../profiler/profiler-simple-example.html'>Simple Profiling Example</a></li><li class='selected'><a href='../profiler/profiler-object-example.html'>Object Profiling Example</a></li> </ul>
</div>
</div>
<div class="mod box4">
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<h4>More Profiler Resources:</h4>
</div>
<div class="bd">
<ul>
<!-- <li><a href="http://developer.yahoo.com/yui/profiler/">User's Guide</a> (external)</li> -->
<li><a href="../../api/module_profiler.html">API Documentation</a></li>
</ul>
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