实现一个JQ拖拽插件
<!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>Just test</title> <style type="text/css"> .drag { position: absolute; width: 100px; height: 100px; border: 1px solid #ddd; background: #FBF2BD; text-align: center; padding: 5px; top: 100px; left: 20px; cursor: move; } </style> <script src="jquery-1.7.2.js" type="text/javascript"></script> <script src="jquery.drag.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { var _move = false; //移动标记 var _x, _y; //鼠标离控件左上角的相对位置 $(".drag").click(function () { //alert("click");//点击(松开后触发) }).mousedown(function (e) { _move = true; _x = e.pageX - parseInt($(".drag").css("left")); _y = e.pageY - parseInt($(".drag").css("top")); $(".drag").fadeTo(20, 0.5); //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; $(".drag").css({ top: y, left: x }); //控件新位置 } }).mouseup(function () { _move = false; $(".drag").fadeTo("fast", 1); //松开鼠标后停止移动并恢复成不透明 }); }); $(function () { // $(".drag").drag(); }); </script> </head> <body> <div class="drag"> 亲,我是可以拖动哦!</div> </body> </html>