<!doctype html><html><head><meta charset="UTF-8"><title>speed</title><style type="text/css">div{width: 100px;height: 50px;background: red;margin: 10px}</style><script type="text/javascript">window.onload=function(){var aDiv=document.getElementsByTagName('div')for(var i=0;i<aDiv.length;i++){ aDiv[i].timer=nullaDiv[i].onmouseover=function(){startMove(this,400)}aDiv[i].onmouseout=function(){startMove(this,100)}}}var timer=null;function startMove(obj,iTarget){clearInterval(timer)obj.timer=setInterval(function(){ var speed=(iTarget-obj.offsetWidth)/6; speed=speed>0?Math.ceil(speed):Math.floor(speed) if(obj.offsetWitdh==iTarget) { clearInterval(obj.timer) } else { obj.style.width=obj.offsetWidth+speed+'px' }},30)}</script></head><body><div></div><div></div><div></div></body></html>
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stone310
TA贡献361条经验 获得超191个赞
最开始的也要改成clearInterval(obj.timer)；
还有if(obj.offsetWitdh==iTarget)这里width写错了
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