<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<script>
//获取非行内元素的样式
function getStyle(obj,name){
if (obj.currentStyle) {
return obj.currentStyle[name];
} else {
return getComputedStyle(obj,false)[name];
}
}
//通用函数
function startMover(acr,sx,iTaget){
clearInterval(acr.timer);
acr.timer=setInterval(function(){
var oDivSx=0;
if (sx=='opacity') {
oDivSx=parseFloat(getStyle(acr,sx))*100;
} else {
oDivSx=parseInt(getStyle(acr,sx));
}
var spead=0;
spead=(iTaget-oDivSx/100)/3;
spead=spead>0?Math.ceil(spead):Math.floor(spead);
if (oDivSx==iTaget) {
clearInterval(acr.timer);
}else{
if(sx=='opacity'){
acr.style.filter='alpha(opcity:'+(oDivSx+spead)+')';
acr.style.opacity=(oDivSx+spead)/100;
}else{
acr.style[sx]=oDivSx+spead+'px';
}
}
},17)
}
//调取
window.onload=function(){
var oDiv=document.getElementById('div1');
oDiv.onmousemove=function(){
startMover(this,'opacity',0.3)
}
}
</script>
<style>
#div1{
width: 200px;
height: 200px;
background: green;
opacity: 1;
filter: alpha(opacity:1);
}
</style>
<body>
<div id="div1"></div>
</body>
</html>
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