最精简的JavaScript鼠标拖动代码

来源：互联网发布：淘宝达人头像怎么换编辑：程序博客网时间：2024/05/18 03:16

<!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><title>鼠标拖动</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><script language="JavaScript" type="text/javascript">var drag_=falsevar D=new Function('obj','return document.getElementById(obj);')var oevent=new Function('e','if (!e) e = window.event;return e')function Move_obj(obj){ var x,y; D(obj).onmousedown=function(e){  drag_=true;  with(this){   style.position="absolute";var temp1=offsetLeft;var temp2=offsetTop;   x=oevent(e).clientX;y=oevent(e).clientY;   document.onmousemove=function(e){    if(!drag_)return false;    with(this){     style.left=temp1+oevent(e).clientX-x+"px";     style.top=temp2+oevent(e).clientY-y+"px";    }   }  }  document.onmouseup=new Function("drag_=false"); }}</script><body><div id="drag" style="background-color:#0066CC;width:280px;height:160px;padding:20px;border:1px #003399 solid;font-size:10.5pt;color:white" onmouseover='Move_obj("drag")'>  <p>这个层是可以拖动的，而且还可以吸附鼠标，试试看！</p>  <p>/</p></div></body></html>