if(obj.currentStyle) 浏览器一直报错是怎么回事？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
body,ul,li{
margin: 0;
padding: 0;
}
ul,li{
list-style: none;
}
ul li{
width: 200px;
height: 100px;
background: yellow;
margin-bottom: 20px;
filter:alpha(opacity:30);
opacity: 0.3;
}
</style>
<script type="text/javascript">
window.onload = function(){
/*var aLi = document.getElementsByTagName("li");
for(var i=0;i<aLi.length;i++){
aLi[i].timer = null;
aLi[i].onmouseover = function(){
startMove(this,400);
}
aLi[i].onmouseout = function(){
startMove(this,200)
}
}*/
var Li1 = document.getElementById("li1");
var Li2 = document.getElementById("li2");
Li1.onmouseover = function(){
startMove(this,"opacity",100);
}
Li1.onmouseout = function(){
startMove(this,"opcity",30);
}
Li2.onmouseover = function(){
startMove(this,"width",400);
}
Li2.onmouseout = function(){
startMove(this,"width",200);
}
}
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];//针对IE
}
else{
return getComputedStyle(obj,false)[attr];//针 对火狐
}
}
//var timer = null;
//var alpha = 30
function startMove(obj,attr,iTarget){
clearInterval(obj.timer);
obj.timer = setInterval(function(){
var icur = 0;
if(attr == "opacity"){
icur = parseFloat(getStyle(obj.arrt))*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);
}
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)
}
</script>
</head>
<body>
<ul>
<li id="li1"></li>
<li id="li2"></li>
</ul>
</body>
</html>
慕粉37281981回答
-
慕粉3728198
icur = parseFloat(getStyle(obj.arrt))*100; 这个打错了
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相关分类
JavaScript