Javascript 判断是否为手机访问

Javascript 简单判断是否为手机访问

var ua = navigator.userAgent;
var ipad = ua.match(/(iPad).*OS\s([\d_]+)/),
isIphone = !ipad && ua.match(/(iPhone\sOS)\s([\d_]+)/),
isAndroid = ua.match(/(Android)\s+([\d.]+)/),
isMobile = isIphone || isAndroid;
if(isMobile) {
        location.href = 'http://m.domain.com';
}else{
        location.href = 'http://www.domain.com';
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//或者单独判断iphone或android 
if(isIphone){
        //code 
else if(isAndroid){
        //code
}else{
        //code
}