为什么透明度没有变化
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>透明度动画</title>
<link href="mystyle2.css" rel="stylesheet" type="text/css" >
<script type="text/javascript">
window.onload=function(){
var oDiv=document.getElementById("div1");
oDiv.onmouseover=function(){
startMove(100);
}
oDiv.onmouseout=function(){
startMove(20);
}
}
var timer=null;
var alpha=30;
function startMove(iTarget){
var oDiv=document.getElementById("div1");
clearInterval(timer);
timer.setInterval(function(){
var speed=0;
if(alpha>iTarget){
speed=-10;
}
else{
speed=10;
}
if(alpha==iTarget){
clearInterval(timer);
}
else{
alpha+=speed;
oDiv.style.filter='alpha(opacity:'+alpha+')';//IE
oDiv.style.opacity=alpha/100;//火狐或chrome
}
},30);
}
</script>
</head>
<body>
<div id="div1"></div>
</body>
</html>
初晴ljp0回答
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相关分类
JavaScript