为什么鼠标移开时没反应呢
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>透明度动画</title>
<style type="text/css">
body,div{padding:0;margin:0;}
#div1{
width: 200px;height: 200px;background: red;filter:alpha(opacity:30);opacity: 0.3;
}
</style>
<script>
window.onload=function(){
var odiv=document.getElementById('div1');
odiv.onmouseover=function(){
startmove(100);
}
odiv.onmouseout=function(){
startmove(30);
}
}
var timer=null;
var alpha=30;
function startmove(itaget){
clearInterval('timer');
var odiv=document.getElementById('div1');
timer=setInterval(function(){
var speed=0;
if(alpha>itaget)
{speed=-10;}
else
{speed=10;}
if(alpha==itaget)
{clearInterval('timer');}
else
{alpha+=speed;
odiv.style.filter='alpha(opacity:'+alpha+')';
odiv.style.opacity=alpha/100;
}
},30)
}
</script>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
</head>
<body>
<div id="div1">
</div>
</body>
</html>
