我跟老师写的代码一样的,不知道为什么在浏览器没有效果呢?
<title>无标题文档</title>
<style>
body.div{
margin:0;
padding: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(iTarget){
var oDiv = document.getElementById("div1");
clearInterval(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+')';
oDiv.style.opacity = alpha/100;
}
},30)
}
</script>
</head>
<body>
<div id="div1"></div>
</body>
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