链式运动实现有可以动，但是边框有重叠
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="jsonmove.js"></script>
<style type="text/css">
body,ul,li{
margin: 0;
padding: 0;
}
ul,li{
width: 200px;
height: 100px;
background-color:yellow;
margin-bottom:20px;
border:4px solid #000;
filter: alpha(opacity:30);
opacity: 0.3;
}
</style>
<script type="text/javascript">
window.onload = function() {
var oLi = document.getElementById('li1');
oLi.onmouseover = function(){
//startMove(oLi,'width',400);
/*宽高不能同时动，因为第二个定时器会覆盖第一个，如果想要同时动需要用到JSON(轻量级的数据交换格式)*/
//startMove(oLi,'height',200);
startMove(oLi,{width:400,height:200,opacity:100});
}
oLi.onmouseout = function(){
startMove(oLi,{width:200,height:100,opacity:30});
}
}
</script>
<title></title>
</head>
<body>
<ul>
<li id="li1"></li>
</ul>
</body>
</html>
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];
}else{
return getComputedStyle(obj,false)[attr];
}
}
//json：多对值的变化
//startMove(obj,{attr1:itarget1,attr2:itarget2},fn)
//回调函数fn
function startMove(obj,json,fn){
clearInterval(obj.timer);
obj.timer = setInterval(function(){
//取当前json的值做循环
for(var attr in json){s
//1、取当前的值
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 = (json[attr]-icur)/8;
//
speed = speed>0?Math.ceil(speed):Math.floor(speed);
//3、检测停止
if (icur == json[attr]) {
clearInterval(obj.timer);
if (fn) {
fn();
}
}else{
if (attr == 'opacity') {
obj.style.filter = 'alpha(opacity:'+(icur+speed)+')';//ie
obj.style.opacity = (icur+speed)/100;//火狐，chrome
} else {
obj.style[attr] = icur+speed+'px';
}
}
}
},30)
}我的代码写出来运行后去下图，求大大帮看哪里写错了
