javascript实现可拖动变色并关闭层窗口实例

前端技术 2023/09/08 JavaScript

本文实例讲述了javascript实现可拖动变色并关闭层窗口的方法。分享给大家供大家参考。具体分析如下：

这是一款基于javascript+CSS实现层拖动的代码，不同的是它在拖动的时候窗口会变色，使操作体验更好一些，你可以运行代码查看效果。它还可以显示/隐藏或关闭打开的效果，没事的时候推敲一下

<html>
<head>
<title>拖动窗口</title>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
<style type=\'text/css\'>
<!--
body{font-size:12px;}
a:visited{text-decoration:none;color:slategray;}
a:hover{text-decoration:underline;color:slategray;}
a:link{text-decoration:none;color:slategray;}
-->
</style>
<script language=JScript>
<!--
var x0=0,y0=0,x1=0,y1=0;
var offx=6,offy=6;
var moveable=false;
var hover=\'orange\',normal=\'#336699\';//color;
var index=10000;//z-index;
//开始拖动;
function startDrag(obj)
{
if(event.button==1)
{
//锁定标题栏;
obj.setCapture();
//定义对象;
var win = obj.parentNode;
var sha = win.nextSibling;
//记录鼠标和层位置;
x0 = event.clientX;
y0 = event.clientY;
x1 = parseInt(win.style.left);
y1 = parseInt(win.style.top);
//记录颜色;
normal = obj.style.backgroundColor;
//改变风格;
obj.style.backgroundColor = hover;
win.style.borderColor = hover;
obj.nextSibling.style.color = hover;
sha.style.left = x1 + offx;
sha.style.top = y1 + offy;
moveable = true;
}
}
//拖动;
function drag(obj)
{
if(moveable)
{
var win = obj.parentNode;
var sha = win.nextSibling;
win.style.left = x1 + event.clientX - x0;
win.style.top = y1 + event.clientY - y0;
sha.style.left = parseInt(win.style.left) + offx;
sha.style.top = parseInt(win.style.top) + offy;
}
}
//停止拖动;
function stopDrag(obj)
{
if(moveable)
{
var win = obj.parentNode;
var sha = win.nextSibling;
var msg = obj.nextSibling;
win.style.borderColor = normal;
obj.style.backgroundColor = normal;
msg.style.color = normal;
sha.style.left = obj.parentNode.style.left;
sha.style.top = obj.parentNode.style.top;
obj.releaseCapture();
moveable = false;
}
}
//获得焦点;
function getFocus(obj)
{
if(obj.style.zIndex!=index)
{
index = index + 2;
var idx = index;
obj.style.zIndex=idx;
obj.nextSibling.style.zIndex=idx-1;
}
}
//最小化;
function min(obj)
{
var win = obj.parentNode.parentNode;
var sha = win.nextSibling;
var tit = obj.parentNode;
var msg = tit.nextSibling;
var flg = msg.style.display==\"none\";
if(flg)
{
win.style.height = parseInt(msg.style.height) + parseInt(tit.style.height) + 2*2;
sha.style.height = win.style.height;
msg.style.display = \"block\";
obj.innerHTML = \"0\";
}
else
{
win.style.height = parseInt(tit.style.height) + 2*2;
sha.style.height = win.style.height;
obj.innerHTML = \"2\";
msg.style.display = \"none\";
}
}
//创建一个对象;
function xWin(id,w,h,l,t,tit,msg)
{
index = index+2;
this.id = id;
this.width = w;
this.height = h;
this.left = l;
this.top = t;
this.zIndex = index;
this.title = tit;
this.message = msg;
this.obj = null;
this.bulid = bulid;
this.bulid();
}
//初始化;
function bulid()
{
var str = \"\"
+ \"<div id=xMsg\" + this.id + \" \"
+ \"style=\'\"
+ \"z-index:\" + this.zIndex + \";\"
+ \"width:\" + this.width + \";\"
+ \"height:\" + this.height + \";\"
+ \"left:\" + this.left + \";\"
+ \"top:\" + this.top + \";\"
+ \"background-color:\" + normal + \";\"
+ \"color:\" + normal + \";\"
+ \"font-size:8pt;\"
+ \"font-family:Tahoma;\"
+ \"position:absolute;\"
+ \"cursor:default;\"
+ \"border:2px solid \" + normal + \";\"
+ \"\' \"
+ \"onmousedown=\'getFocus(this)\'>\"
+ \"<div \"
+ \"style=\'\"
+ \"background-color:\" + normal + \";\"
+ \"width:\" + (this.width-2*2) + \";\"
+ \"height:20;\"
+ \"color:white;\"
+ \"\' \"
+ \"onmousedown=\'startDrag(this)\' \"
+ \"onmouseup=\'stopDrag(this)\' \"
+ \"onmousemove=\'drag(this)\' \"
+ \"ondblclick=\'min(this.childNodes[1])\'\"
+ \">\"
+ \"<span style=\'width:\" + (this.width-2*12-4) + \";padding-left:3px;\'>\" + this.title + \"</span>\"
+ \"<span style=\'width:12;border-width:0px;color:white;font-family:webdings;\' onclick=\'min(this)\'>0</span>\"
+ \"<span style=\'width:12;border-width:0px;color:white;font-family:webdings;\' onclick=\'ShowHide(\\\"\"+this.id+\"\\\",null)\'>r</span>\"
+ \"</div>\"
+ \"<div style=\'\"
+ \"width:100%;\"
+ \"height:\" + (this.height-20-4) + \";\"
+ \"background-color:white;\"
+ \"line-height:14px;\"
+ \"word-break:break-all;\"
+ \"padding:3px;\"
+ \"\'>\" + this.message + \"</div>\"
+ \"</div>\"
+ \"<div id=xMsg\" + this.id + \"bg style=\'\"
+ \"width:\" + this.width + \";\"
+ \"height:\" + this.height + \";\"
+ \"top:\" + this.top + \";\"
+ \"left:\" + this.left + \";\"
+ \"z-index:\" + (this.zIndex-1) + \";\"
+ \"position:absolute;\"
+ \"background-color:black;\"
+ \"filter:alpha(opacity=40);\"
+ \"\'></div>\";
document.body.insertAdjacentHTML(\"beforeEnd\",str);
}
//显示隐藏窗口
function ShowHide(id,dis){
var bdisplay = (dis==null)?((document.getElementById(\"xMsg\"+id).style.display==\"\")?\"none\":\"\"):dis
document.getElementById(\"xMsg\"+id).style.display = bdisplay;
document.getElementById(\"xMsg\"+id+\"bg\").style.display = bdisplay;
}
//-->
</script>
<script language=\'JScript\'>
<!--
function initialize()
{
var a = new xWin(\"1\",160,200,200,200,\"窗口1\",\"xWin Demo\");
var b = new xWin(\"2\",240,200,100,100,\"窗口2\",\"Welcome\"); 
var c = new xWin(\"3\",200,160,250,50,\"窗口3\",\"Copyright\");
ShowHide(\"1\",\"none\");//隐藏窗口1
}
window.onload = initialize;
//-->
</script>
</head>
<base target=\"_blank\">
<body onselectstart=\'return false\' oncontextmenu=\'return false\' >
<a onclick=\"ShowHide(\'1\',null);return false;\" href=\"\">Windows 1</a>
<a onclick=\"ShowHide(\'2\',null);return false;\" href=\"\">Windows 2</a>
<a onclick=\"ShowHide(\'3\',null);return false;\" href=\"\">Windows 3</a>
</body>
</html>

希望本文所述对大家的javascript程序设计有所帮助。

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