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Day10----------alphaPic

 //----------使用opacity属性完成对图片透明度渐变的效果
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title></title> 6 </head> 7 <style type="text/css"> 8 img{height: 500px;width: 800px;margin: 20px 100px;filter:alpha(opacity:30);opacity: 0.3;} 9 </style>10 <script type="text/javascript">11 window.onload=function(){12 var degree=0.3;13 oImg=document.getElementsByTagName(‘img‘)[0];14 oImg.onmouseover=function(){15 setInterval(function(){16 degree+=0.05;17 oImg.style.opacity=degree;//NIE;18 oImg.style.filter="alpha(opacity:"+degree*100+")";//IE19 },50); 20 }21 }22 </script>23 <body>24 <div><img src="http://www.mamicode.com/pic/alpha.jpg"></div>25 </body>26 </html>

 

Day10----------alphaPic