一个简单的效果--可以拖动的div_可拖拽大小的div-优快云博客

本文链接：https://blog.youkuaiyun.com/tgxblue/article/details/8782767

本文介绍了一个简单的HTML页面，其中包含了六个可拖动的div元素。通过JavaScript实现了这些元素的鼠标拖拽功能，允许用户在页面上自由移动这些元素。

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<!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>
<style type="text/css">
#main div{position:absolute;width:220px;height:150px;border:1px solid #999;}
</style>
<script type="text/javascript">
var a;
document.onmouseup=function(){
    if(!a)return;document.all?a.releaseCapture():window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);a="";};
document.onmousemove=function (d){if(!a)return;if(!d)d=event;a.style.left=(d.clientX-b)+"px";a.style.top=(d.clientY-c)+"px";};
function $(o,e){a=o;document.all?a.setCapture():window.captureEvents(Event.MOUSEMOVE);b=e.clientX-parseInt(a.style.left);c=e.clientY-parseInt(a.style.top);}
</script>
</head>
<body>
  <div id="main">
    <div style="left:100px;top:100px;background:#fc9;" onmousedown="$(this,event)">1</div>
    <div style="left:400px;top:100px;background:#9cf;" onmousedown="$(this,event)">2</div>
    <div style="left:700px;top:100px;background:#f9c;" onmousedown="$(this,event)">3</div>
    <div style="left:100px;top:300px;background:#9fc;" onmousedown="$(this,event)">4</div>
    <div style="left:400px;top:300px;background:#c9f;" onmousedown="$(this,event)">5</div>
    <div style="left:700px;top:300px;background:#cf9;" onmousedown="$(this,event)">6</div>
  </div>
</body>
</html>