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<html><title>图片预加载</title><body><script>//判断浏览器var Browser=new Object();Browser.userAgent=window.navigator.userAgent.toLowerCase();Browser.ie=/msie/.test(Browser.userAgent);Browser.Moz=/gecko/.test(Browser.userAgent);//判断是否加载完成function Imagess(url,imgid,callback){ var val=url; var img=new Image(); if(Browser.ie){ img.onreadystatechange =function(){ if(img.readyState=="complete"||img.readyState=="loaded"){ callback(img,imgid); } } }else if(Browser.Moz){ img.onload=function(){ if(img.complete==true){ callback(img,imgid); } } } //如果因为网络或图片的原因发生异常，则显示该图片 img.onerror=function(){img.src='http://www.baidu.com/img/baidu_logo.gif'} img.src=val;}//显示图片function checkimg(obj,imgid){document.getElementById(imgid).src=obj.src;}//初始化需要显示的图片，并且指定显示的位置window.onload=function(){ Imagess("http://hiphotos.baidu.com/lovebyakuya/pic/item/01cf20088f9506f063d98653.jpg","img1",checkimg); Imagess("http://hiphotos.baidu.com/lovebyakuya/pic/item/7b7b19c70d62f4fdd0006050.jpg","img2",checkimg); Imagess("http://hiphotos.baidu.com/joanne728/pic/item/892557641806d20eaa184c71.jpg","img3",checkimg); Imagess("http://www.neocha.com/-/res/Camilla/20071204181216078845_h.jpg","img4",checkimg); Imagess("http://www.neocha.com/-/res/Camilla/20071204181216d078845_h.","img5",checkimg);}</script><img id="img1" src="loading.gif" width="100" height="100" /><img id="img2" src="loading.gif" width="100" height="100" /><img id="img3" src="loading.gif" width="100" height="100" /><img id="img4" src="loading.gif" width="100" height="100" /><img id="img5" src="loading.gif" width="100" height="100" /></body></html> |
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