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用js写一个可以拖拽的浮动窗口

2016-04-29 13:30 711 查看

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>dom3.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script language="javascript" type="text/javascript">
var x =0;
var y = 0;
var x1 =0;
var y1 = 0;
var moveable = false;
var index = 20000;

function down(obj,evt){
e = evt?evt:window.event;
//通过这个来判断是IE还是FF  浏览器的兼容性问题
// 			if(!window.captureEvents()){
obj.setCapture();
// 			}else{
// 				window.captureEvents(Event.MOUSEMOVE | Event.MOUSEUP);
// 			}
var win = obj.parentNode;//取得父窗口
x = e.clientX;//取得当前坐标的X坐标
y = e.clientY;//取得当前坐标的Y坐标
x1 = parseInt(win.style.left.substr(0,win.style.left.length-2));//将父窗体距离浏览器左边界的距离转换为number
y1 = parseInt(win.style.top.substr(0,win.style.top.length-2));//将父窗体距离浏览器左边界的距离转换为number
moveable= true;

}

function move(obj, evt){
e = evt?evt:window.event;
if(moveable){
var win = obj.parentNode;
win.style.left = x1 + e.clientX - x +"px";
win.style.top = y1 + e.clientY -y +"px";

}
}
//停止拖动
function up(obj){
// 			if(!window.captureEvents()){
obj.releaseCapture();
// 			}else{
// 				window.releaseEvents(Event.MOUSEMOVE | Event.MOUSEUP);
// 			}
moveable= false;
}
</script>

</head>

<body >
<div style="width:400px;height:400px;top:100px;left:100px;background-color:red;position:absolute;">
<div onmousedown="down(this,event)" onmousemove="move(this,event)" onmouseup="up(this)"
style="width:400px;height:100px;top:0px;left:0px;background-color:blue;position:absolute;font-size:30px;cursor:default">
浮动窗口
</div>
</div>
</body>
</html>

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标签： javascript

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