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js 可拖动效果

2019年05月31日 ⁄ 综合 ⁄ 共 1279字 ⁄ 字号 评论关闭
<!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> New Document </title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Language" content="zh-CN" />
<meta name="Design Corp" content="www.mysuc.com" />
<meta name="Designer" content="hayden" />
<meta name="Designer mail" content="hayden@yeah.net" />
<meta name="robots" content="hayden" />
<meta name="Keywords" content="" />
<meta name="Description" content="" />
<script language="JavaScript" type="text/javascript">
var drag_=false
var 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="test" style="background-color:#0099CC;width:200px;height:100px;border:1px #000 solid;" onmouseover='Move_obj("test")'>鼠标过来点击拖动层</div>
</body>
</html>

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