js判断当前页面在移动设备还是在PC端中打开

 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                };              }(),              language: (navigator.browserLanguage || navigator.language).toLowerCase()            }                        if (browser.versions.mobile) {//判断是否是移动设备打开。browser代码在下面                var ua = navigator.userAgent.toLowerCase();//获取判断用的对象                if (ua.match(/MicroMessenger/i) == "micromessenger") {                    //在微信中打开                   setInterval(WeixinJSBridge.call('closeWindow'),2000);                }                if (ua.match(/WeiBo/i) == "weibo") {                    //在新浪微博客户端打开                }                if (ua.match(/QQ/i) == "qq") {                    //在QQ空间打开                }                if (browser.versions.ios) {                    //是否在IOS浏览器打开                }                 if(browser.versions.android){                    //是否在安卓浏览器打开                }            } else {                //否则就是PC浏览器打开                window.close();            }

<script type="text/javascript">    function browserRedirect() {      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";      document.writeln("您的浏览设备为：");      if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {        document.writeln("phone");      } else {        document.writeln("pc");      }    }    browserRedirect();  </script>