js根据手机客户端浏览器类型，判断跳转官网/手机网站多个实例代码

实例一、比较简单粗暴缺少点类型判断

<script type="text/javascript"> 
    
        var sUserAgent = navigator.userAgent.toLowerCase(); 
        var bIsIpad = sUserAgent.match(/ipad/i) == "ipad"; 
        var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os"; 
        var bIsMidp = sUserAgent.match(/midp/i) == "midp"; 
        var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4"; 
        var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb"; 
        var bIsAndroid = sUserAgent.match(/android/i) == "android"; 
        var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce"; 
        var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile"; 
        if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM ){ 
          window.location.href="3g.php";
        } 
      
         
</script>

实例二、代码工整，很多的函数都基于这个增加的功能

<script>
	var pc_style = ""
	var browser = {
	versions: function () {
	var u = navigator.userAgent, app = navigator.appVersion;
	return {
	trident: u.indexOf('Trident') > -1,
	presto: u.indexOf('Presto') > -1,
	webKit: u.indexOf('AppleWebKit') > -1,
	gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,
	mobile: !!u.match(/AppleWebKit.*Mobile.*/) || !!u.match(/AppleWebKit/) && u.indexOf('QIHU') && u.indexOf('QIHU') > -1 && u.indexOf('Chrome') < 0,
	ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/),
	android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1,
	iPhone: u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1,
	iPad: u.indexOf('iPad') > -1,
	webApp: u.indexOf('Safari') == -1,
	ua: u
	};
	}(),
	language: (navigator.browserLanguage || navigator.language).toLowerCase()
	}

	if (browser.versions.mobile && !browser.versions.iPad) {
	this.location = "此处输入跳转微站首页地址";
	}
</script>

实例三、增加了一些功能

<!--智能手机判断开始-->
<!--
	 <script type = "text/javascript" language = "javascript" >
	Function.prototype.bind = function (bindObj, args) {
	var _self = this;
	return function () {
		return _self.apply(bindObj, [].concat(args))
	}
};
function $(id) {
	return "string" == typeof id ? document.getElementById(id) : id;
};

var browser = {
	versions : function () {
		var u = navigator.userAgent,
		app = navigator.appVersion;
		return {
			trident : u.indexOf('Trident') > -1,
			presto : u.indexOf('Presto') > -1,
			webKit : u.indexOf('AppleWebKit') > -1,
			gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,
			mobile : !!u.match(/AppleWebKit.*Mobile.*/) || !!u.match(/AppleWebKit/),
			ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/),
			android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1,
			iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1,
			iPad : u.indexOf('iPad') > -1,
			webApp : u.indexOf('Safari') == -1,
			QQbrw : u.indexOf('MQQBrowser') > -1,
			ucLowEnd : u.indexOf('UCWEB7.') > -1,
			ucSpecial : u.indexOf('rv:1.2.3.4') > -1,
			ucweb : function () {
				try {
					return parseFloat(u.match(/ucweb\d+\.\d+/gi).toString().match(/\d+\.\d+/).toString()) >= 8.2
				} catch (e) {
					if (u.indexOf('UC') > -1) {
						return true;
					} else {
						return false;
					}
				}
			}
			(),
			Symbian : u.indexOf('Symbian') > -1,
			ucSB : u.indexOf('Firefox/1.') > -1
		};
	}
	()
}
var _gaq = _gaq || [];
(function (win, browser, undefined) {
	var rf = document.referrer;
	if (rf === "" || rf.toLocaleLowerCase().indexOf(".xiu.com") === -1) {
		var defaultJumpDomain = "";
		if (defaultJumpDomain == "www") {
			return;
		}
		if (defaultJumpDomain == "m") {
			window.location.href = "http://wap.xiu.com/?from=pc";
			return;
		}
		if (screen == undefined || screen.width < 810) {
			if (browser.versions.iPad == true) {
				return;
			}
			if (browser.versions.webKit == true || browser.versions.mobile == true || browser.versions.ios == true || browser.versions.iPhone == true || browser.versions.ucweb == true || browser.versions.ucSpecial == true) {
				win.location.href = "http://wap.xiu.com/?from=pc";
				return;
			}
			if (browser.versions.Symbian) {
				win.location.href = "http://wap.xiu.com/";
			}
		}
	}
})(window, browser);

 </script>
-->
<!--智能手机判断结束-->

实例四、简洁小牛知识库推荐使用，如果您有更好的代码可以分享

<script type="text/javascript">
var browser = {
	versions : function () {
		var u = navigator.userAgent,
		app = navigator.appVersion;
		return {
			trident : u.indexOf('Trident') > -1,
			presto : u.indexOf('Presto') > -1,
			webKit : u.indexOf('AppleWebKit') > -1,
			gecko : u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,
			mobile : !!u.match(/AppleWebKit.*Mobile.*/) || !!u.match(/AppleWebKit/),
			ios : !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/),
			android : u.indexOf('Android') > -1 || u.indexOf('Linux') > -1,
			iPhone : u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1,
			iPad : u.indexOf('iPad') > -1,
			webApp : u.indexOf('Safari') == -1,
			QQbrw : u.indexOf('MQQBrowser') > -1,
			weiXin : u.indexOf('MicroMessenger') > -1,
			ucLowEnd : u.indexOf('UCWEB7.') > -1,
			ucSpecial : u.indexOf('rv:1.2.3.4') > -1,
			ucweb : function () {
				try {
					return parseFloat(u.match(/ucweb\d+\.\d+/gi).toString().match(/\d+\.\d+/).toString()) >= 8.2
				} catch (e) {
					if (u.indexOf('UC') > -1) {
						return true;
					} else {
						return false;
					}
				}
			}
			(),
			Symbian : u.indexOf('Symbian') > -1,
			ucSB : u.indexOf('Firefox/1.') > -1
		};
	}
	(),
	liulanqi : navigator.userAgent
}
if (browser.versions.QQbrw){
document.write("qq浏览器");
}else
{
document.write("其它浏览器"+browser.liulanqi);
}
</script>