分享程序员开发的那些事...
更新时间：2021-11-20 03:09:28
尝试以下操作:工作示例
请确保#page-content上没有任何样式限制中心框，然后尝试将jquery代码放入文档就绪事件中.
Make sure you don't have any styles on #page-content that are constraining center-box and try putting your jquery code in the document ready event.
/*CSS*/
#center-box{
position:absolute;
width:400px;
height:500px;
background:#C0C0C0;
border:1px solid #000;
}
/*js*/
$(document).ready(function(){
var windowheight = $(window).height();
var windowwidth = $(window).width();
var pagecenterW = windowwidth/2;
var pagecenterH = windowheight/2;
$("div#center-box")
.css({top: pagecenterH-250 + 'px', left: pagecenterW-200 + 'px'});
});
/*html*/
<body>
<div id="center-box">
</div>
</body>