链式动画动不了。。。求大神指点5555555
洛洛
2017-11-09 19:56
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{
padding: 0;
margin:0;
}
ul,li{
list-style: none;
}
ul li{
width:200px;
height: 100px;
background: yellow;
margin-bottom: 20px;
border:4px solid #000;
font-size: 10px;
color:red;
filter: :alpha(opacity:30);
opacity: 0.3;
}
</style>
<script src='move.js'></script>
<script>
window.onload=function(){
var li=document.getElementById('li1');
li.onmouseover=function(){
startMove(li,400,'height',function(){
startMove(li,200,'width');
});
}
}
</script>
</head>
<body>
<ul>
<li id="li1"></li>
</ul>
</body>
</html>//------------move.js--------------------------
function startMove(obj,iTarget,attr,fn){
clearInterval(obj.timer);
obj.timer=setInterval(function(){
var icur=0;
if(attr=='opacity')
{
icur=Math.round(parseFloat(getStyle(obj,attr))*100);//四舍五入
}else{
icur=parseInt(getStyle(obj,attr));
}
//算速度
var speed=(iTarget-icur)/8;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
//检测停止
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[attr]=icur+speed+'px';
}
}
})
}
function getStyle(obj,attr)
{
if(obj.currentStyle){
return obj.currentStyle[attr];
}else
{
return getComputedStyle(obj,false)[attr];
}
}
2回答
-
- 洛洛
- 2017-11-09 20:05:48
又好了。。。
-
- 洛洛
- 2017-11-09 20:03:03
之前alert(1)是可以的但是startMove就不可以
JS动画效果
113910 学习 · 1502 问题
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