系统判断功能，判断是pc端or移动端

系统判断功能，判断是pc端or移动端

方法1：

function IsPC(){  var userAgentInfo = navigator.userAgent;var Agents = new Array("Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod");  var flag = true;  for (var v = 0; v < Agents.length; v++) {  if (userAgentInfo.indexOf(Agents[v]) > 0) { flag = false; break; }  }  return flag;  }
if (/(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent)) {//alert(navigator.userAgent);  window.location.href ="iPhone.html";
} else if (/(Android)/i.test(navigator.userAgent)) {//alert(navigator.userAgent); window.location.href ="Android.html";
} else {window.location.href ="pc.html";
};

方法2：

var os = function() {var ua = navigator.userAgent,isWindowsPhone = /(?:Windows Phone)/.test(ua),isSymbian = /(?:SymbianOS)/.test(ua) || isWindowsPhone, isAndroid = /(?:Android)/.test(ua), isFireFox = /(?:Firefox)/.test(ua), isChrome = /(?:Chrome|CriOS)/.test(ua),isTablet = /(?:iPad|PlayBook)/.test(ua) || (isAndroid && !/(?:Mobile)/.test(ua)) || (isFireFox && /(?:Tablet)/.test(ua)),isPhone = /(?:iPhone)/.test(ua) && !isTablet,isPc = !isPhone && !isAndroid && !isSymbian;return {isTablet: isTablet,isPhone: isPhone,isAndroid : isAndroid,isPc : isPc};
}();
使用方法 
if(os.isAndroid || os.isPhone){alert("-----");
}

方法3：

var browser={versions:function(){ var u = navigator.userAgent, app = navigator.appVersion; return {//移动终端浏览器版本信息 trident: u.indexOf('Trident') > -1, //IE内核presto: u.indexOf('Presto') > -1, //opera内核webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端ios: !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器iPhone: u.indexOf('iPhone') > -1 , //是否为iPhone或者QQHD浏览器iPad: u.indexOf('iPad') > -1, //是否iPad  webApp: u.indexOf('Safari') == -1, //是否web应该程序，没有头部与底部weixin: u.indexOf('MicroMessenger') > -1, //是否微信 qq: u.match(/sQQ/i) == " qq" //是否QQ};}(),language:(navigator.browserLanguage || navigator.language).toLowerCase()
} if(bile || browser.versions.ios || browser.versions.android || browser.versions.iPhone || browser.versions.iPad){  	window.location = "";	}

方法4：

if(/AppleWebKit.*st(navigator.userAgent) || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))){if(window.location.href.indexOf("?mobile")<0){try{if(/Android|webOS|iPhone|iPod|st(navigator.userAgent)){window.location.href="手机页面";}else if(/st(navigator.userAgent)){window.location.href="平板页面";}else{window.location.href="其他移动端页面"}}catch(e){}}
}

方法5：

<script language="javascript"> 
//平台、设备和操作系统  
var system ={  
win : false,  
mac : false,  
xll : false  
};  
//检测平台  
var p = navigator.platform;  
system.win = p.indexOf("Win") == 0;  
system.mac = p.indexOf("Mac") == 0;  
system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);  
//跳转语句，如果是手机访问就自动跳转到caibaojian页面  
if(system.win||system.mac||system.xll){  
}else{  
window.location.href="";  
}  
</script>

方法6：

<script language="javascript"> 
function is_mobile() {var regex_match = /(nokia|iphone|android|motorola|^mot-|softbank|foma|docomo|kddi|up.browser|up.link|htc|dopod|blazer|netfront|helio|hosin|huawei|novarra|CoolPad|webos|techfaith|palmsource|blackberry|alcatel|amoi|ktouch|nexian|samsung|^sam-|s[cg]h|^lge|ericsson|philips|sagem|wellcom|bunjalloo|maui|symbian|smartphone|midp|wap|phone|windows ce|iemobile|^spice|^bird|^zte-|longcos|pantech|gionee|^sie-|portalmmm|jigs browser|hiptop|^benq|haier|^lct|operas*mobi|opera*mini|320x320|240x320|176x220)/i;var u = navigator.userAgent;if (null == u) {return true;}var result = (u);if (null == result) {return false} else {return true}}if (is_mobile()) {document.location.href= '';  //修改}
</script>

方法7：（百度webapp版）

<!---识别手机或电脑的js开始--->
(function(){var res = GetRequest();var par = res['index'];if(par!='gfan'){var ua=LowerCase();var contains=function (a, b){if(a.indexOf(b)!=-1){return true;}};
//将下面的 如我的  toMobileVertion = function(){window.location.href = '/'}if(contains(ua,"ipad")||(contains(ua,"rv:1.2.3.4"))||(contains(ua,"0.0.0.0"))||(contains(ua,"8.0.552.237"))){return false}if((contains(ua,"android") && contains(ua,"mobile"))||(contains(ua,"android") && contains(ua,"mozilla")) ||(contains(ua,"android") && contains(ua,"opera"))||contains(ua,"ucweb7")||contains(ua,"iphone")){toMobileVertion();}}
})();
function GetRequest() {var url = location.search; //获取url中"?"符后的字串var theRequest = new Object();if (url.indexOf("?") != -1) {var str = url.substr(1);strs = str.split("&");for(var i = 0; i < strs.length; i ++) {theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);}}return theRequest;
}
<!---识别手机或电脑的js结束--->