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224 lines
16 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<title>YUI Library Examples: Dom Collection: Using setStyle</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<link rel="stylesheet" type="text/css" href="../../assets/yui.css" >
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/*Supplemental CSS for the YUI distribution*/
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#custom-doc { width: 95%; min-width: 950px; }
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#pagetitle {background-image: url(../../assets/bg_hd.gif);}
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<!--begin custom header content for this example-->
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<style type="text/css">
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#foo {
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background-color:#00f;
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color:#fff;
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height:100px;
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width:100px;
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margin-bottom:1em;
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}
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</style>
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<script type="text/javascript">
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//enable passthrough of errors from YUI Event:
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if ((typeof YAHOO !== "undefined") && (YAHOO.util) && (YAHOO.util.Event)) {
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YAHOO.util.Event.throwErrors = true;
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}
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</script>
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</head>
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<body id="yahoo-com" class="yui-skin-sam">
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<div id="custom-doc" class="yui-t2">
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<div id="hd">
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<div id="ygunav">
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<p><em><a href="http://developer.yahoo.com/yui/">YUI Library Home</a></em></p>
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<form action="http://search.yahoo.com/search" id="sitesearchform">
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<input name="vs" type="hidden" value="developer.yahoo.com">
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<input name="vs" type="hidden" value="yuiblog.com">
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<div id="sitesearch">
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<label for="searchinput">Site Search (YDN & YUIBlog): </label>
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<input type="text" id="searchinput" name="p">
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<input type="submit" value="Search" id="searchsubmit" class="ygbt">
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</form> </div>
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<div id="ygma"><a href="../../"><img src="../../assets/yui.gif" border="0" height="38"></a></div>
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<div id="pagetitle"><h1>YUI Library Examples: Dom Collection: Using setStyle</h1></div>
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</div>
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<div id="bd">
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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">
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<div class="promo">
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<h1>Dom Collection: Using setStyle</h1>
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<div class="exampleIntro">
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<p>Clicking the button will use Dom's <code>setStyle</code> method to set the opacity of the element.</p>
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</div>
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<div class="example-container module ">
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<div class="hd exampleHd">
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<p class="newWindowButton yui-skin-sam"><!--<span id="newWindowLinkx"><span class="first-child">--><a href="setstyle_clean.html" target="_blank">View example in new window.</a><!--</span></span>-->
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</div> <div id="example-canvas" class="bd">
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<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
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<div id="foo">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</div>
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<button id="demo-run">run</button>
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<script type="text/javascript">
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(function() {
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var fade = function() {
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YAHOO.util.Dom.setStyle('foo', 'opacity', 0.5);
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};
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YAHOO.util.Event.on('demo-run', 'click', fade);
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YAHOO.log("The example has finished loading; as you interact with it, you'll see log messages appearing here.", "info", "example");
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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">Using setStyle</h2>
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<p><a href="/yui/dom/#setStyle"><code>setStyle</code></a>, part of the <a href="http://developer.yahoo.com/yui/dom/">YUI Dom Collection</a>, makes it easy to set the style properties of an HTMLElement. One of the benefits of this method is that it provides normalized (and simpler) mechanism for setting opacity in Internet Explorer.</p>
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<p>To illustrate the use of <code>setStyle</code>, we'll create a <code><div></code> called <code>foo</code>. When the button is clicked, the opacity of <code>foo</code> will be set to <code>0.5</code>.</p>
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<p>Add some simple CSS rules and markup for the demo element:</p>
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<textarea name="code" class="HTML" cols="60" rows="1">
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<style type="text/css">
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#foo {
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background-color:#00f;
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color:#fff;
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height:100px;
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width:100px;
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}
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</style>
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<div id="foo">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</div>
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<button id="demo-run">run</button>
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</textarea>
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<p>Now we will define the function that sets the opacity of <code>foo</code>. The first argument of the <code>setStyle</code> method is either the ID of an HTMLElement, or an actual HTMLElement object. The second argument is the style property being set, and the third is the value to be applied to the property.</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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var fade = function() {
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YAHOO.util.Dom.setStyle('foo', 'opacity', 0.5);
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};
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</script>
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</textarea>
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<p>Next we will use the <a href="http://developer.yahoo.com/yui/event/">YUI Event Utility</a>'s <code>on</code> method to listen for clicks on the button.</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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YAHOO.util.Event.on('demo-run', 'click', fade);
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</script>
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</textarea>
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<p>This is a simple example of how to use the <code>YAHOO.util.Dom.setStyle</code> method. In addition to normalizing opacity, <code>setStyle</code> fixes other properties that vary across browsers (e.g. "float").</p>
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<h2>Configuration for This Example</h2>
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<p>You can load the necessary JavaScript and CSS for this example from Yahoo's servers. <a href="http://developer.yahoo.com/yui/articles/hosting/?event&dom&MIN#configure">Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured</a>.</p>
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</div>
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<div class="yui-u">
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<div id="loggerModule" class="yui-skin-sam">
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<h3 class="firstContent">YUI Logger Output:</h3>
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<div id="loggerGloss"><p><strong>Note:</strong> Logging and debugging is currently turned off for this example.</p>
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<p class="loggerButton"><span id="loggerLink"><span class="first-child"><a href="setstyle_log.html">Reload with logging<br />
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and debugging enabled.</a></span></span></p></div>
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</div>
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<div id="examples">
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<h3>Dom Collection Examples:</h3>
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<div id="exampleToc">
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<ul>
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<li><a href='../dom/setxy.html'>Using setXY</a></li><li><a href='../dom/getxy.html'>Using getXY</a></li><li class='selected'><a href='../dom/setstyle.html'>Using setStyle</a></li><li><a href='../dom/getstyle.html'>Using getStyle</a></li><li><a href='../dom/hasclass.html'>Using hasClass</a></li><li><a href='../dom/addclass.html'>Using addClass</a></li><li><a href='../dom/removeclass.html'>Using removeClass</a></li><li><a href='../dom/getelementsbyclassname.html'>Using getElementsByClassName</a></li><li><a href='../dom/dom-explorer.html'>Exploring the Dom Collection's API</a></li> </ul>
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</div>
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</div>
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<div id="module">
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<h3>More Dom Collection Resources:</h3>
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<ul>
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<li><a href="http://developer.yahoo.com/yui/dom/">User's Guide</a> (external)</li>
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<li><a href="../../docs/module_dom.html">API Documentation</a></li>
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<li><a href="http://yuiblog.com/assets/pdf/cheatsheets/dom.pdf">Cheat Sheet PDF</a> (external)</li></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 class="yui-b" 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">Yahoo! UI Library</li><li class="item"><a title="The Yahoo! User Interface Library (YUI)" href="http://developer.yahoo.com/yui/">Home (external)</a></li><li class="item"><a title="The Yahoo! 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<p class="first">Copyright © 2010 Yahoo! Inc. All rights reserved.</p>
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