问什么鼠标移出时透明度变不了啊啊啊？
明日之渺
2017-05-15 17:33
<!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>无标题文档</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){//元素对象和属性
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(){
//取当前的值
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>
1回答
-
- 明日之渺
- 2017-05-15 17:42:28
哈哈，自己发现了，移出透明度忘记改为30了，郁闷。。。。
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