<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>多物体运动和渐变色</title>
<style type="text/css">
*{margin: 10px;padding: 0px}
div{
float: left;
width: 100px;
height: 100px;
background: #18F11C;
filter: alpha(opacity:30);
opacity: 0.3;
}
</style>
<script type="text/javascript">
window.onload=function() {
var Div=document.getElementsByTagName('div');
for (var i = 0; i < Div.length; i++) {
Div[i].timer=null;
Div[i].onmouseover=function(){
var This=this; //感觉是加粗部分有问题！
startMove(This,'opacity',100,function(){
startMove(This,'width',400);
});
}
Div[i].onmouseout=function(){
startMove(This,'width',100,function(){
startMove(This,'opacity',30);
});
}
}
}
function getStyle(obj,arr){
if(obj.currentStyle){
return obj.currentStyle[arr];
}else{
return getComputedStyle(obj,false)[arr];
}
}
//var timer=null;
var alpha=30;
function startMove(obj,arr,iTarget,fn){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
varicon=0;
if(arr=='opacity'){
icon=Math.round(parseFloat(getStyle(obj,arr))*100);
}else{
icon=parseInt(getStyle(obj,arr));
}
var speed=(iTarget-icon)/8;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(icon==iTarget){
clearInterval(obj.timer);
if(fn)
{fn();}
}else{
if(arr=='opacity'){
obj.style.filter='alpha(opacity:)'+icon+speed+')';
obj.style.opacity=(speed+icon)/100;
}else{
obj.style.arr=icon+speed+'px';
}
}
},30)
}
</script>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</body>
</html>
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