<!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=gb2312" /><title>无标题文档</title><style type="text/css">body,div,span{ margin:0; padding:0;}#div1{ width:200px; height:200px; background:red; position:relative; left:-200px; top:0;}#div1 span{ width:20px; height:50px; background:blue; position:absolute; left:200px; top:75px;}<script>window.onload = function(){ var oDiv = document.getElementById('div1'); oDiv.onmouseover = function(){ startMove(); }}function startMove(){ var oDiv = document.getElementById('div1'); setInterval(function(){ oDiv.style.left = oDiv.offsetLeft + 10 + 'px'; },30)}</script></style></head><body> <div id="div1"><span id="share">分享</span></div></body></html>不知道为什么老是显示不出来效果，不能运动啊为什么？谢谢老师
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