aLi[i].timer=null;为什么谷歌会报错，还有为什么我parseInt(getStyle(obj,'width'))可以执行变化但是var了就不行。
慕娘4728584
2016-10-26 01:03
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style>
body, ul,li{
padding: 0;
margin: 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>
window.onload=function(){
var aLi=document.getElementsByTagName('li');
for(var i=0;i<=aLi.length;i++){
aLi[i].timer=null;
aLi[i].alpha=30;
aLi[i].timer1=null;
aLi[i].onmouseover=function()
{
startMove(this,400,100);
}
aLi[i].onmouseout=function()
{
startMove(this,200,30);
}
}
}
function startMove(obj,iTarget,ikkk){
clearInterval(obj.timer);
clearInterval(obj.timer1);
var dong=parseInt(getStyle(obj,'width'));
obj.timer=setInterval(function(){
var speed=(iTarget -parseInt(getStyle(obj,'width')) )/8;/*实现缓冲运动*/
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(parseInt(getStyle(obj,'width'))==iTarget)
{
clearInterval(obj.timer);
}
else{
obj.style.width=parseInt(getStyle(obj,'width'))+speed+'px';
}}
,30)
/*
obj.timer1=setInterval(function(){
var speed;
if(obj.alpha>ikkk){
speed=-10; }
else{
speed=10;
}if (obj.alpha==ikkk){
clearInterval(obj.timer1);
}
else{
obj.alpha+=speed;
obj.style.filter='alpha(opacity:'+obj.alpha+')';
obj.style.opacity=obj.alpha/100;}
},30)
}*/
}
//获取CSS属性，直接offsetWidth会加上border属性。
function getStyle(obj,attr){
if(obj.currentStyle)
{return obj.currentStyle[attr];//ie
}
else
{return getComputedStyle(obj,false)[attr];}
}
</script>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
2回答
-
- qq_等风来_55
- 2017-06-09 17:08:23
i < ali.length 不是<= 长度只有3 你却赋了4次值 要仔细
-
- 慕娘4728584
- 2016-10-26 01:04:28
就是当我用var dong=parseInt(getStyle(obj,'width'))进行替换时，特效就没用了。很奇怪
JS动画效果
113920 学习 · 1494 问题
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