javascript或css3 media query如何检测来访设备是iPad Mini

如果只是用不同的CSS改变这些尺寸的大小 media query能行吧

目前根据userAgent确实是无法区分的。下面这篇文章考虑了各种技术，最后得出的结论是：Impossible。

To make a final conclusion, the problem is not that we can’t detect iPad mini; the problem is that we can’t detect its unique features, such as density and real dimensions that are important for delivering the best possible experience one ach device using responsive web design techniques.

Mission: Impossible – iPad mini detection for HTML5：http://www.mobilexweb.com/blog/ipad-m...
Hacker News-No user agent detection for the iPad Mini：http://news.ycombinator.com/item?id=4...

iPad mini的分辨率和iPad1和iPad2都是一样的 1024*768，所以前端的元素都是一样的
要区分iPad mini只有通过http header里的UA来判断

<script> 
alert(navigator.userAgent);
</script>