基于jQuery的判断iPad、iPhone、Android是横屏还是竖屏的代码

functionorient(){
if(window.orientation==90||window.orientation==-90){
//ipad、iphone竖屏；Andriod横屏
$("body").attr("class","landscape");
orientation="landscape";
returnfalse;
}
elseif(window.orientation==0||window.orientation==180){
//ipad、iphone横屏；Andriod竖屏
$("body").attr("class","portrait");
orientation="portrait";
returnfalse;
}
}
//页面加载时调用
$(function(){
orient();
});
//用户变化屏幕方向时调用
$(window).bind("orientationchange",function(e){
orient();
});