js弹出新窗口居中
方式1：
<script language="javascript">
var newUrl = <%=newUrl % >
//window.location=nurl;
var awidth = screen.availWidth / 6 * 3; //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
var params = "top=" + atop + ",left=" + aleft + ",width=" + awidth + ",height=" + aheight + "," + param0;
window.close();
window.open(newUrl, '', params); //打开新窗口
//window.open(newUrl,'','height=0,width=0');
</script>
方式2：
<script language="javascript">
var newUrl = <%=newUrl % >;
window.close();
var newWindow; //定义一个窗口，有利于窗口间的通讯
makeNewWindow(newUrl);
function makeNewWindow(url) {
if (!newWindow || newWindow.closed) {
var width = 400;
var height = 300;
var left = parseInt((screen.availWidth / 2) - (width / 2)); //屏幕居中
var top = parseInt((screen.availHeight / 2) - (height / 2));
var windowFeatures = "width=" + width + ",height=" + height + ",status,scrollbars=yes,resizable,left=" + left + ",top=" + top + "screenX=" + left + ",screenY=" + top;
newWindow = window.open(url, "", windowFeatures);
} else {
newWindow.focus();
}
}
//window.location=nurl;
//window.open(newUrl,'','height=0,width=0');
</script>
<html> <head> </head> <body> <script language="javascript"> var x = 640; var y = 480; var xx = (window.screen.width - x) / 2; var yy = (window.screen.height - y) / 2; window.resizeTo(x, y); window.moveTo(xx, yy); var newUrl = <%=newUrl%>; window.close(); var windowFeatures = "width=" + x + ",height=" + y + ",status,scrollbars=yes,resizable,left=" + xx + ",top=" + yy + "screenX=" + xx + ",screenY=" + yy; window.open(newUrl, "", windowFeatures); </script> </body> </html>
参数有以下几个:
window.open 弹出新窗口的命令； page.html 弹出窗口的文件名； newwindow 弹出窗口的名字（不是文件名），非必须，可用空''代替； height=100 窗口高度； width=400 窗口宽度； top=0 窗口距离屏幕上方的象素值； left=0 窗口距离屏幕左侧的象素值； toolbar=no 是否显示工具栏，yes为显示； menubar，scrollbars 表示菜单栏和滚动栏。 resizable=no 是否允许改变窗口大小，yes为允许； location=no 是否显示地址栏，yes为允许； status=no 是否显示状态栏内的信息（通常是文件已经打开），yes为允许；
方法3：
<SCRIPT LANGUAGE="javascript"> <!-- window.open ('page.html', 'newwindow', 'height=100, width=400, top=0, left=0, toolbar=no, menubar=no, scrollbars=no, resizable=no,location=no, status=no') //写成一行 --> </SCRIPT>
