js 打开窗口居中显示代码
文章收藏了二款打开窗口居中显示代码，他是利用了window.open来打开新窗口，但是居中利用了screen.availwidth/6*2来计算，然后再调整弹出窗口位置。
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.zhutiai.com/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>js 打开窗口居中显示代码</title>
<script language="网页特效">
//打开窗口居中显示
function openwindow(url,name,width,height)
{
//alert(url);
//宽默认400
if(width=="" || width==0)
{
width=300;
}
//高默认300
if(height=="" || height==0)
{
height=200;
}
//var winx=window.screen.width;
//var winy=window.screen.height;
var winx=width;
var winy=height;
var win=window.open(url,name,"width="+winx+",height="+winy+",toolbar=no,menubar=no,scrollbars=no,resizable=yes,location=no,status=yes");
//win.moveto(0,0);
win.moveto((window.screen.width-width)/2,(window.screen.height-height)/2);
}</script>
</head><body>
<a href="#" onclick="javascript:openwindow('http://www.zzzyk.com','openurl',300,500)">打开窗口居中显示</a>
</body>
</html>
代码二
<script language="javascript">
function openwin(htmurl)
{
var url=htmurl; //要打开的窗口
var winname="newwin"; //给打开的窗口命名
var awidth=screen.availwidth/6*2; //窗口宽度,需要设置
var aheight=screen.availheight/5*2; //窗口高度,需要设置
var atop=(screen.availheight - aheight)/2; //窗口顶部位置,一般不需要改
var aleft=(screen.availwidth - awidth)/2; //窗口放中央,一般不需要改
var param0="scrollbars=0,status=0,menubar=0,resizable=2,location=0"; //新窗口的参数
//新窗口的左部位置，顶部位置，宽度，高度
var params="top=" + atop + ",left=" + aleft + ",width=" + awidth + ",height=" + aheight + "," + param0 ;
win=window.open(url,winname,params); //打开新窗口win.focus(); //新窗口获得焦点
}
</script>
<p>javascript 打开一个居中显示的网页</p><p><input type="button" value="打开新窗口" name="b3" onclick="openwin('bb.html');"></p>
补充：网页制作,js教程 
