JQuery 拖动层
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>jQuery拖动层</title> <style type="text/css"> #div2 { position:absolute; width:400px; height:300px; border:1px solid #333333; background-color:#777788; text-align:center; line-height:400%; font-size:13px; left:80px; top:20px; } </style> <script type="text/javascript" language="javascript" src="/ajaxjs/jquery-1.4.1.js"></script> <script type="text/javascript" language="javascript"> var _move = false; //移动标记 var _x, _y; //鼠标离控件左上角的相对位置 $(document).ready(function () { $("#div2").click(function () { //alert("click");//点击(松开后触发) }).mousedown(function (e) { _move = true; _x = e.pageX - parseInt($("#div2").css("left")); _y = e.pageY - parseInt($("#div2").css("top")); $("#div2").fadeTo(20, 0.25); //点击后开始拖动并透明显示 }); $(document).mousemove(function (e) { if (_move) { var x = e.pageX - _x; //移动时根据鼠标位置计算控件左上角的绝对位置 var y = e.pageY - _y; $("#div2").css({ top: y, left: x }); //控件新位置 } }).mouseup(function () { _move = false; $("#div2").fadeTo("fast", 1); //松开鼠标后停止移动并恢复成不透明 }); }); </script> </head> <body> <div id="div2">支持拖拽</div> </body> </html>