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<title>YUI Library Examples: Profiler: Object Profiling Example</title> |
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<a href="http://developer.yahoo.com/yui/3/">YUI 3.x Home</a> <i> - </i> |
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</em> |
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</p> |
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<form action="http://search.yahoo.com/search" id="sitesearchform"> |
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<div id="ygma"><a href="../../"><img src="../../assets/logo.gif" border="0" width="200" height="93"></a></div> |
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<div id="pagetitle"><h1>YUI Library Examples: Profiler: Object Profiling Example</h1></div> |
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</div> |
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<div id="bd"> |
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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 id="yui-main"> |
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<div class="yui-b"> |
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<div class="yui-ge"> |
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<div class="yui-u first example" id="main"> |
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<h2>Profiler: Object Profiling Example</h2> |
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<div id="example" class="promo"> |
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<p> |
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<p>This example shows using the Profiler on all methods in an object. It uses the <code>Y.DOM</code> object |
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as the object to be profiled.</p> </p> |
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<div class="module example-container "> |
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<div id="example-canvas" class="bd"> |
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<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== --> |
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<div class="bar">div class="bar"</div> |
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<div class="bar-baz">div class="bar-baz"</div> |
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<div class="bar ">div class="bar "</div> |
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<div class=" bar ">div class=" bar "</div> |
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<div class="bar baz">div class=" bar baz"</div> |
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<div class="bar2 baz">div class=" bar2 baz"</div> |
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<div class="foo">div class="foo"</div> |
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<div class="foo" id="bar">div class="foo" id="bar"</div> |
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<div class="foo bar baz">div class="foo bar baz"</div> |
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<p class="bar">p class="bar"</p> |
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<button id="demo-run">run</button> |
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<script type="text/javascript"> |
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YUI({base:"../../build/", timeout: 10000, filter:"debug", logInclude: {profiler:true, example:true}}).use("node", "profiler",function (Y) { |
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Y.Node.get('#demo-run').on('click', function(){ |
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Y.Profiler.registerObject("Y.Node", Y.Node); |
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Y.Profiler.registerObject("Y.DOM", Y.DOM); |
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var results = Y.Node.all('.bar'); |
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results.addClass("newclass"); |
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var report = Y.Profiler.getFullReport(function(data){ |
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return data.calls > 0; |
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}); |
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Y.Profiler.unregisterObject("Y.Node"); |
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Y.Profiler.unregisterObject("Y.DOM"); |
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//output results |
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var msg = ""; |
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for (var func in report){ |
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msg += (func + "(): Called " + report[func].calls + " times. Avg: " + |
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report[func].avg + ", Min: " + report[func].min + ", Max: " + report[func].max) + "\n"; |
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} |
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alert(msg); |
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}); |
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}); |
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</script> |
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<!--END SOURCE CODE FOR EXAMPLE =============================== --> |
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</div> |
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</div> |
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</div> |
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<h2 class="first">Object Profiling Example</h2> |
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<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 |
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that all of the methods on these objects are being profiled. To |
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illustrate their use, a number of demo elements are added to the markup:</p> |
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<textarea name="code" class="HTML" cols="60" rows="1"> |
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<div class="bar">div class="bar"</div> |
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<div class="bar-baz">div class="bar-baz"</div> |
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<div class="bar ">div class="bar "</div> |
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<div class=" bar ">div class=" bar "</div> |
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<div class="bar baz">div class=" bar baz"</div> |
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<div class="bar2 baz">div class=" bar2 baz"</div> |
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<div class="foo">div class="foo"</div> |
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<div class="foo" id="bar">div class="foo" id="bar"</div> |
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<div class="foo bar baz">div class="foo bar baz"</div> |
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<p class="bar">p class="bar"</p> |
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<button id="demo-run">run</button> |
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</textarea> |
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<p>The button is used to run the example. The function being called when the button is clicked is assigned by first |
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retrieving a <code>Node</code> instance for the button and then using the <code>on</code> method:</p> |
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<textarea name="code" class="JScript" cols="60" rows="1"> |
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<script type="text/javascript"> |
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YUI({base:"../../build/", timeout: 10000, filter:"debug", logInclude: {profiler:true, example:true}}).use("node", "profiler", function (Y) { |
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Y.Node.get('#demo-run').on('click', function(){ |
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Y.Profiler.registerObject("Y.Node", Y.Node); |
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Y.Profiler.registerObject("Y.DOM", Y.DOM); |
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var results = Y.Node.all('.bar'); |
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results.addClass("newclass"); |
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var report = Y.Profiler.getFullReport(function(data){ |
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return data.calls > 0; |
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}); |
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Y.Profiler.unregisterObject("Y.Node"); |
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Y.Profiler.unregisterObject("Y.DOM"); |
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//output results |
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var msg = ""; |
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for (var func in report){ |
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msg += (func + "(): Called " + report[func].calls + " times. Avg: " + |
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report[func].avg + ", Min: " + report[func].min + ", Max: " + report[func].max) + "\n"; |
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} |
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alert(msg); |
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}); |
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}); |
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</script> |
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</textarea> |
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<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 |
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exist in the global scope, the second argument is necessary for <code>registerObject()</code>. Then, the <code>Y.Node.all()</code> |
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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> |
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object, on which the <code>addClass()</code> method is called. After that, the full report is returned and the objects are unregistered. The last |
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step is to output all of the information that was collected. Even though there's only two methods called explicitly in this example, |
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the profiled data indicates that several other methods on <code>Y.DOM</code> and <code>Y.Node</code> were called internally to accomplish the |
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tasks.</p> |
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</div> |
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<div class="yui-u sidebar"> |
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<div id="examples" class="mod box4"> |
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<div class="hd"> |
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<h4> |
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Profiler Examples:</h4> |
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</div> |
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<div class="bd"> |
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<ul> |
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<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> |
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</div> |
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</div> |
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<div class="mod box4"> |
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<div class="hd"> |
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<h4>More Profiler Resources:</h4> |
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</div> |
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<div class="bd"> |
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<ul> |
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<!-- <li><a href="http://developer.yahoo.com/yui/profiler/">User's Guide</a> (external)</li> --> |
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<li><a href="../../api/module_profiler.html">API Documentation</a></li> |
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</ul> |
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</div> |
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</div> |
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</div> |
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</div> |
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</div> |
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</div> |
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<div class="yui-b toc3" id="tocWrapper"> |
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<!-- TABLE OF CONTENTS --> |
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<div id="toc"> |
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<ul> |
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<li class="sect first">YUI 3.x Project</li><li class="item"><a title="The Yahoo! User Interface (YUI) Library, 3.x Branch, " href="http://developer.yahoo.com/yui/3/">YUI 3 Web Site (external)</a></li><li class="item"><a title="Examples of every YUI utility and control in action" href="../../examples/">YUI 3 Examples</a></li><li class="item"><a title="Instantly searchable API documentation for the entire YUI library." href="../../api/">YUI 3 API Docs</a></li><li class="item"><a title="The YUI Library can be downloaded from SourceForge" href="http://sourceforge.net/projects/yui/">YUI 3 on Sourceforge (external)</a></li><li class="item"><a title="YUI is free and open, offered under a BSD license." href="http://developer.yahoo.com/yui/3/license.html">YUI License (external)</a></li><li class="sect">YUI 3 Core - Examples</li><li class="item"><a title="YUI (Global Prerequisite) - Functional Examples" href="../../examples/yui/index.html">YUI (Global Prerequisite)</a></li><li class="item"><a title="Event - Functional Examples" href="../../examples/event/index.html">Event</a></li><li class="item"><a title="Node - Functional Examples" href="../../examples/node/index.html">Node</a></li><li class="sect">YUI 3 Component Infrastructure - Examples</li><li class="item"><a title="Attribute - Functional Examples" href="../../examples/attribute/index.html">Attribute</a></li><li class="item"><a title="Plugin - Functional Examples" href="../../examples/plugin/index.html">Plugin</a></li><li class="item"><a title="Widget - Functional Examples" href="../../examples/widget/index.html">Widget</a></li><li class="sect">YUI 3 Utilities - Examples</li><li class="item"><a title="Animation - Functional Examples" href="../../examples/anim/index.html">Animation</a></li><li class="item"><a title="Cache - Functional Examples" href="../../examples/cache/index.html">Cache</a></li><li class="item"><a title="Cookie - Functional Examples" href="../../examples/cookie/index.html">Cookie</a></li><li class="item"><a title="DataSchema - Functional Examples" href="../../examples/dataschema/index.html">DataSchema</a></li><li class="item"><a title="DataSource - Functional Examples" href="../../examples/datasource/index.html">DataSource</a></li><li class="item"><a title="DataType - Functional Examples" href="../../examples/datatype/index.html">DataType</a></li><li class="item"><a title="Drag & Drop - Functional Examples" href="../../examples/dd/index.html">Drag & Drop</a></li><li class="item"><a title="Get - Functional Examples" href="../../examples/get/index.html">Get</a></li><li class="item"><a title="History - Functional Examples" href="../../examples/history/index.html">History</a></li><li class="item"><a title="ImageLoader - Functional Examples" href="../../examples/imageloader/index.html">ImageLoader</a></li><li class="item"><a title="IO - Functional Examples" href="../../examples/io/index.html">IO</a></li><li class="item"><a title="JSON (JavaScript Object Notation) - Functional Examples" href="../../examples/json/index.html">JSON</a></li><li class="item"><a title="Queue - Functional Examples" href="../../examples/queue/index.html">Queue</a></li><li class="item"><a title="Stylesheet - Functional Examples" href="../../examples/stylesheet/index.html">Stylesheet</a></li><li class="sect">YUI 3 Widgets - Examples</li><li class="item"><a title="Overlay - Functional Examples" href="../../examples/overlay/index.html">Overlay</a></li><li class="item"><a title="Slider - Functional Examples" href="../../examples/slider/index.html">Slider</a></li><li class="sect">YUI 3 Node Plugins - Examples</li><li class="item"><a title="FocusManager Node Plugin - Functional Examples" href="../../examples/node-focusmanager/index.html">FocusManager Node Plugin</a></li><li class="item"><a title="MenuNav Node Plugin - Functional Examples" href="../../examples/node-menunav/index.html">MenuNav Node Plugin</a></li><li class="sect">YUI 3 CSS - Examples</li><li class="item"><a title="YUI CSS Reset - Functional Examples" href="../../examples/cssreset/index.html">CSS Reset</a></li><li class="item"><a title="YUI Fonts - Functional Examples" href="../../examples/cssfonts/index.html">CSS Fonts</a></li><li class="item"><a title="YUI Base - Functional Examples" href="../../examples/cssbase/index.html">CSS Base</a></li><li class="sect">YUI 3 Developer Tools - Examples</li><li class="item"><a title="Console - Functional Examples" href="../../examples/console/index.html">Console</a></li><li class="selected "><a title="Profiler - Functional Examples" href="../../examples/profiler/index.html">Profiler</a></li><li class="item"><a title="Test - Functional Examples" href="../../examples/test/index.html">Test</a></li><li class="sect">The YUI Community</li><li class="item"><a title="The Yahoo! User Interface Blog" href="http://yuiblog.com">YUI Blog (external)</a></li><li class="item"><a title="The Yahoo! Group YDN-JavaScript hosts the YUI community forum" href="http://tech.groups.yahoo.com/group/ydn-javascript/">YUI Forum (external)</a></li><li class="item"><a title="The Yahoo! Group yui3 is dedicated to the 3.x branch of the Yahoo! User Interface (YUI) Library." href="http://tech.groups.yahoo.com/group/yui3/">YUI 3 Forum (external)</a></li><li class="item"><a title="YUI is used by Yahoo! and by hundreds of other sites, including many you know and love." href="/yui/poweredby/">YUI Sightings (external)</a></li><li class="item"><a title="Videos and podcasts from the YUI Team and from the Yahoo! frontend engineering community." href="http://developer.yahoo.com/yui/theater/">YUI Theater (external)</a></li><li class="sect">YUI Articles on the YUI Website</li><li class="item"><a title="Answers to Frequently Asked Questions about the YUI Library" href="http://developer.yahoo.com/yui/articles/faq/">YUI FAQ (external)</a></li><li class="item"><a title="Yahoo!'s philosophy of Graded Browser Support" href="http://developer.yahoo.com/yui/articles/gbs/">Graded Browser Support (external)</a></li><li class="item"><a title="Reporting Bugs and Making Feature Requests for YUI Components" href="http://developer.yahoo.com/yui/articles/reportingbugs/">Bug Reports/Feature Requests (external)</a></li><li class="item"><a title="Serve YUI source files from Yahoo! -- free, fast, and simple" href="http://developer.yahoo.com/yui/3/articles/hosting/">Serving YUI Files from Yahoo! (external)</a></li></ul> |
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</div> |
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</div> |
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</div><!--closes bd--> |
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<div id="ft"> |
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<p class="first">Copyright © 2009 Yahoo! Inc. All rights reserved.</p> |
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<p><a href="http://privacy.yahoo.com/privacy/us/devel/index.html">Privacy Policy</a> - |
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<a href="http://docs.yahoo.com/info/terms/">Terms of Service</a> - |
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<a href="http://docs.yahoo.com/info/copyright/copyright.html">Copyright Policy</a> - |
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<a href="http://careers.yahoo.com/">Job Openings</a></p> |
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</div> |
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</div> |
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<script src="../../assets/dpSyntaxHighlighter.js"></script> |
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<script language="javascript"> |
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dp.SyntaxHighlighter.HighlightAll('code'); |
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</script> |
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</body> |
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</html> |