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	<title>寂静的深海 &#187; 预加载</title>
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		<title>JavaScript预加载图片</title>
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		<pubDate>Mon, 03 May 2010 12:41:29 +0000</pubDate>
		<dc:creator>Deepseath</dc:creator>
				<category><![CDATA[日积月累]]></category>
		<category><![CDATA[Javascript]]></category>
		<category><![CDATA[预加载]]></category>

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		<description><![CDATA[非原创，偶然在搜索引擎上看到的，觉得不错，记下来做个参考。 var loadimg = function(imgs,callback){ if ( !imgs ) { //参数判断 return false; } var img = []; var len = imgs.length; for ( var i=0;i img[i] = new Image();//新建一个IMG对象 img[i].src = imgs[i]; } img[i-1].onload = callback ? callback.apply(img) : null; //回调函数给最后一个图片的onload事件说明全部图片加载完成。 //（我不知道这种是否正确，我看了httpwatch应该是没问题的） //回调函数this指向全部预计在图片的数组 //这样可以在回调函数里调用刚才加载的图片 }; var imgs = [ "http://www.baidu.com/img/baidu_logo.gif", "http://img1.gtimg.com/news/pics/25962/25962079.jpg" ];//要加载的图片地址 loadimg(imgs,function(){ alert(this[0].src); [...]]]></description>
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