<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>拖拽div</title> <style type="text/css"> div{ position:absolute; width:150px; height:150px; background-color:#C8FFFF; } </style> <script type="text/javascript"> <!-- function drag(obj) { if (typeof obj == "string") { var obj = document.getElementById(obj); obj.orig_index=obj.style.zIndex; //设置当前对象永远显示在最上层 } obj.onmousedown=function (a){ //鼠标按下 this.style.cursor="move"; //设置鼠标样式 this.style.zIndex=1000; var d=document; if(!a) a=window.event; //按下时创建一个事件 var x=a.clientX-document.body.scrollLeft-obj.offsetLeft; //x=鼠标相对于网页的x坐标-网页被卷去的宽-待移动对象的左外边距 var y=a.clientY-document.body.scrollTop-obj.offsetTop; //y=鼠标相对于网页的y左边-网页被卷去的高-待移动对象的左上边距 d.onmousemove=function(a){//鼠标移动 if(!a) a=window.event;//移动时创建一个事件 obj.style.left=a.clientX+document.body.scrollLeft-x; obj.style.top=a.clientY+document.body.scrollTop-y; } d.onmouseup=function (){//鼠标放开 document.onmousemove=null; document.onmouseup = null; obj.style.cursor="normal";//设置放开的样式 obj.style.zIndex=obj.orig_index; } } } --> </script> </head> <body> <div> </div> <div></div> <script type="text/javascript"> <!-- drag("div1"); drag("div2"); --> </script> </body> </html>
js实现简单div拖拽功能实例
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