<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>可拖动的div层</title>
<style type="text/css">
.draggable-div{
position: absolute;
width: 300px;
height:185px;
background-color: lightgray;
}
</style>
<script type="text/javascript" src="jquery-1.8.3.js"></script>
<script type="text/javascript">
var draggable = false;
var offsetX = 0;//按下鼠标按键的时候，当前鼠标的x坐标和div左上角定点的x坐标的差值
var offsetY = 0;
$(document).ready(function(){
$("#draggableDiv").css("position","absolute").mousedown(function () {
draggable = true;
offsetX = event.clientX-this.offsetLeft;
offsetY = event.clientY-this.offsetTop;
}).mouseup(function () {
draggable = false;
}).mousemove(function () {
//如果draggable为true,改变div的位置
if(draggable){
this.style.left = event.clientX-offsetX+"px";
this.style.top = event.clientY-offsetY+"px";
}
}).mouseout(function(){
draggable=false;
});
});
</script>
</head>
<body>
<div id="draggableDiv" class="draggable-div"></div>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title></title>
<script type="text/javascript">
var draggable = false;
//鼠标指针y坐标的减去div左上角顶点y坐标
var offsetY = 0;
var offsetX = 0;
window.onload=function(){
var div01 = document.getElementById("div01");
div01.style.position = "absolute";
div01.onmousedown=function(){
draggable = true;
offsetY = event.clientY - div01.offsetTop;
offsetX = event.clientX - div01.offsetLeft;
}
div01.onmouseup=function(){
draggable=false;
}
div01.onmousemove=function(){
if(draggable){
//拖动
this.style.left = event.clientX-offsetX+"px";
this.style.top = event.clientY - offsetY+"px";
}
}
div01.onmouseout=function(){
draggable = false;
}
}
</script>
</head>
<body>
<div id="div01" style="width: 300px;height: 185px;background-color: lightgray"></div>
</body>
</html>
