<!doctype?html>
<html>
<head>
<meta?charset="utf-8">
<title>無標(biāo)題文檔</title>
<style>
*?{
margin:?0;
padding:?0;
}
ul,?li?{
list-style:?none;
}
#li1?{
width:?200px;
height:?100px;
border:?4px?solid?black;
background:?yellow;
margin-bottom:?20px;
?filter:?alpha(opacity:30);
opacity:?0.3;
}
</style>
<script?src="move.js"></script>
<script>
window.onload=function(){
var?Li?=?document.getElementById('li1');
Li.onmouseover?=?function(){
startMove(Li,'width',400,function(){
startMove(Li,'height',200,function(){
startMove(Li,'opacity',100);
});
});
}
Li.onmouseout?=?function(){
startMove(Li,'opacity',30,function(){
startMove(Li,'height',100,function(){
startMove(Li,'width',200);
});
});
}
}
</script>
</head>
<body>
????<ul>
??????<li?id="li1"></li>
????</ul>
</body>
</html>下面是js的
function?getStyle(obj,attr){
? if(obj.currentStyle){
? return?obj.currentStyle[attr];
? }else{
? return?getComputedStyle(obj,false)[attr];
? }
? }
function?startMove(obj,attr,iTarget,fn){
clearInterval(obj.timer);
obj.timer?=?setInterval(function(){
//1.取當(dāng)前的值
var?icur?=?0;
if(attr?=='opacity'){
icur?=?Math.round(parseFloat(getStyle(obj,?attr))*100);
}else{???
icur=parseInt(getStyle(obj,?attr));
}
//2.算速度
var?speed?=?(iTarget-icur)/8;
speed?=?speed>0?Math.ceil(speed):Math.floor(speed);
//3.檢測停止
if(icur==iTarget){
clearInterval(obj.timer);
}else?if(attr=='opacity'){
obj.style.filter?=?'alpha(opacity:'+(icur+speed)+')';?
obj.style.opacity?=(icur+speed)/100;
}else{
obj.style[attr]=icur+speed+"px";
}
},30)
}
請(qǐng)問我這個(gè)哪錯(cuò)了呢？每次鼠標(biāo)移入變寬后就沒效果了。
慕九州7009252
2016-11-23 12:12:04
