<!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>使用鼠标拖动层代码</title>
<style type="text/css">
#Main
{
width:400px;
height:400px;
position:absolute;
top:10px;
left:0;
border:1px solid #CCC;
border-radius:5px;
background-color:Green;
}
h3
{
margin:0;
width:400px;
height:40px;
background-color:Gray;
cursor:move;
line-height:40px;
border-radius:5px 5px 0 0;
}
</style>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.min.js"></script>
<script type="text/javascript">
//注册一个Jquery的鼠标拖动函数,参数为要拖动的对象
$.fn.extend({ SliderObject: function (objMoved) {
var isMouseDown = false; //鼠标是否按下
var mouseDownPosiX;
var mouseDownPosiY;
var InitPositionX;
var InitPositionY;
var obj = $(objMoved) == undefined ? $(this) : $(objMoved);
obj.mousedown(function (e) {
//当鼠标按下时捕获鼠标位置以及对象的当前位置
mouseDownPosiX = e.pageX;
mouseDownPosiY = e.pageY;
isMouseDown = true;
InitPositionX = obj.css("left").replace("px", "");
InitPositionY = obj.css("top").replace("px", "");
}).mousemove(function (e) {
//当鼠标按下并且移动时，首先判断鼠标是否在当前焦点，以及鼠标是否已经弹起，
if ($(this).is(":focus") && isMouseDown) {
var tempX = parseInt(e.pageX) - parseInt(mouseDownPosiX) + parseInt(InitPositionX);
var tempY = parseInt(e.pageY) - parseInt(mouseDownPosiY) + parseInt(InitPositionY);
obj.css("left", tempX + "px").css("top", tempY + "px");
}
//当鼠标弹起或者离开元素时，将鼠标弹起置为false，不移动对象
}).mouseup(function () {
isMouseDown = false;
}).mouseleave(function () {
isMouseDown = false;
});
}
});
$(document).ready(function () {
$("#Slider").SliderObject($("#Main"));
})
</script>
</head>
<body>
<div id="Main">
<h3>鼠标放在这里拖动我</h3>
<div id="Container">可以使用鼠标拖动的层</div>
</div>
</body>
</html>
//javascript/6041