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2015-07-25 15:50
<!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>
*{margin:0;
padding:0;}
ul,li{list-style:none;}
ul li{width:200px;
height:100px;
background:yellow;
margin-bottom:20px;
}
</style>
<script>
window.onload=function(){
var oli=document.getElementsByTagName('li');
for(var i=0;i=oli.length;i++){
oli[i].onmouseover=function(){
startMove(this,400);
};
oli[i].onmouseout=function(){
startMove(this,200);
};
}
}
var timer=null;
function startMove(obj,itarget){
document.write("hshs");
clearInterval(timer);
timer=setInterval(function(){
var speed=(itarget-obj.offsetWidth)/8;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(obj.offsetWidth==itarget){
clearInterval(timer);
}else{
obj.style.width=obj.offsetWidth+speed+'px';
}
},30)
}
</script>
</head>
<body>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</body>
</html>
<!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> *{margin:0; padding:0;} ul,li{list-style:none;} ul li{width:200px; height:100px; background:yellow; margin-bottom:20px; } </style> <script> window.onload=function(){ var oli=document.getElementsByTagName('li'); for(var i=0;i<oli.length;i++){ oli[i].timer=null;//给每一个li都设置一个定时器,有点添加属性的意思 oli[i].onmouseover=function(){ startMove(this,400); }; oli[i].onmouseout=function(){ startMove(this,200); }; } } //var timer=null; function startMove(obj,itarget){ //document.write("hshs"); clearInterval(obj.timer);//防止定时器重复触发 obj.timer=setInterval(function(){ var speed=(itarget-obj.offsetWidth)/8; speed=speed>0?Math.ceil(speed):Math.floor(speed); if(obj.offsetWidth==itarget){ clearInterval(obj.timer);//这里也需要改为obj.timer }else{ obj.style.width=obj.offsetWidth+speed+'px'; } },30) } </script> </head> <body> <ul> <li></li> <li></li> <li></li> </ul> </body> </html>
你看我给你注释的地方,你的都有问题,我已经帮你改过来了~~~~~~~~~(*^__^*) 嘻嘻……
没有动的原因是因为你的for循环条件有问题
你的定时器只有一个是公用的,没有给每一个li都设置~~~望采纳~
JS动画效果
113925 学习 · 1443 问题
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