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jquery 彈出框自適應視窗垂直水平居中

<html>
<head>
    <title>彈出框自適應</title>
    <script src="jquery-1.10.2.min.js" type="text/javascript" charset="utf-8"></script>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
            border: 0;
        }
        .pop{
            position
: fixed
; padding: 10px 20px; border: solid pink 1px; }
</style> <script type="text/javascript"> $(function(){ function boxAuto(){ var dom = $(".pop"); var w = dom.innerWidth(); var h = dom.innerHeight(); var
t = ($(window).height() - h) / 2; var l = ($(window).width() - w) / 2; dom.css("top",t); dom.css("left",l); } boxAuto(); $(window).resize(function(){ boxAuto(); }) });
</script
>
</head> <body style="height:1000px;"> <div class="pop"> 彈出框 </div> </body> </html>