問什么鼠標(biāo)移出時透明度變不了啊啊??？
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>無標(biāo)題文檔</title>
<style>
body,ul{marging:0;padding:0;}
ul,li{list-style:none;}
ul li{width:200px;height:100px;background:yellow;margin-bottom:20px;border:4px solid #000;filter:alpha(opacity:30);
opacity:0.3;}
</style>
<script>
window.onload=function(){
var Li1=document.getElementById("li1");
Li1.onmouseover=function(){
startMove(this,"opacity",100);
}
Li1.onmouseout=function(){
startMove(this,"opacity",100);
}
function getStyle(obj,attr){//元素對象和屬性
if(obj.currentStyle){
return obj.currentStyle[attr];
}
else{
return getComputedStyle(obj,false)[attr];
}
}
var alpha=30;
function startMove(obj,attr,iTarget){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
//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));
}
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>
</ul>
</body>
</html>
2017-05-15
哈哈，自己發(fā)現(xiàn)了，移出透明度忘記改為30了，郁悶。。。。