做的淡入淡出怎么不能实现效果啊 浏览器也没报错
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
#box{width: 300px;height: 300px;background: red;
opacity: 0.3;
filter:alpha(opacity: 30)}
</style>
<script type="text/javascript">
window.onload=function()
{
var Box=document.getElementById('box')
Box.onmouseover=function()
{
startMove(100)
}
Box.onmouseout=function()
{
startMove(30)
}
}
var timer=null;
var alpha=30
function startMove(Target)
{
var Box=document.getElementById('box')
clearInterval(timer)
timer=setInterval(function()
{
var speed=0
if(alpha<Target)
{
spend=10
}
else
{
spend=-10
}
if(alpha==Target)
{
clearInterval(timer)
}
else
{
alpha+=speed
Box.style.opacity=alpha/100;
Box.style.filter='alpha(opacity:'+alpha+')'
}
},30)
}
</script>
</head>
<body>
<div id="box">
</div>
</body>
</html>
慕粉40843402回答
-
stone310
中间speed赋值写成spend了..
随时随地看视频慕课网APP
Html/CSS
JavaScript
JQuery