move.js
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];
}else{
return getComputedStyle(obj,false)[attr];
}
}
function starMove(obj,attr,iTarget,fn){
clearInterval(obj.timer);
obj.timer = setInterval(function(){
var icur = 0;
if(attr == 'opacity'){
icur = Math.round(parseFloat(getStyle(obj,attr))*100);
}else{
icur = parseInt(getStyle(obj,attr));
}
var speed = (iTarget - icur)/8;
speed = speed>0?Math.ceil(speed):Math.floor(speed);
if(icur == iTarget){
clearInterval(obj.timer);
if(fn){
fn();
}
}else{
if(attr == 'opacity'){
obj.style.filter = 'alpha(opacity:"+(icur+speed)+")';
obj.style.opacity = (icur+speed)/100;
}else{
obj.style.width = icur + speed + 'px';
}
}
},30)
}html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
ul{
margin-top: 20px;
}
ul,li{
list-style: none;
}
ul li{
width:200px;
height: 100px;
background: red;
margin-bottom: 20px;
filter:alpha('opacity':30);
opacity: 0.3;
border: 1px solid #ccc;
}
</style>
<script type="text/javascript" src="js/move.js"></script>
<script type="text/javascript">
window.onload = function(){
var Li = document.getElementById('li1');
Li.onmouseover = function(){
starMove(Li,'width',400,function(){
starMove(Li,'height',200);
});
}
}
</script>
</head>
<body>
<ul>
<li id="li1"></li>
</ul>
</body>
</html>调用完一次之后无法调用第二次。
我也遇到相同的问题？？？
知道了。原来是js那里写错了
就是调用starMove一次把宽度改变后无法继续调用starMove改变高度。