javascript - 如何通过js判断微信、QQ等内置浏览器并在外部浏览器打开？

Question

如题，当在手机QQ打开一个网页，如何自动跳转到第三方浏览器打开？类似下图

下面并不能自动打开第三方浏览器（QQ/UC/Opera等等）

求大神指点

<!---识别手机或电脑的js开始---><script language="javascript"> (function(){    var res = GetRequest();    var par = res['index'];    if(par!='gfan'){        var ua=navigator.userAgent.toLowerCase();        var contains=function (a, b){            if(a.indexOf(b)!=-1){return true;}        };//将下面的http://abc.com改成你的wap手机版页面地址 如我的 http://abc.com        var toMobileVertion = function(){            window.location.href = 'http://abc.com/'        }         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;}</script><!---识别手机或电脑的js结束---><!---识别手机或电脑的js开始---><script language="javascript"> (function(){    var res = GetRequest();    var par = res['index'];    if(par!='gfan'){        var ua=navigator.userAgent.toLowerCase();        var contains=function (a, b){            if(a.indexOf(b)!=-1){return true;}        };//将下面的http://abc.com改成你的wap手机版页面地址 如我的 http://abc.com        var toMobileVertion = function(){            window.location.href = 'http://abc.com/'        }         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;}</script><!---识别手机或电脑的js结束--->

Answer 1

(function(){    var ua = navigator.userAgent.toLowerCase();    var isWeChat = ua.indexOf('micromessenger') !== -1;    var isQQBrowser = ua.indexOf('qq/') !== -1;    if(isWeChat || isQQBrowser) {        var url = 'intent://www.example.com#Intent;scheme=http;package=com.android.chrome;end';                window.location.href = url;                setTimeout(function(){            if (!document.webkitHidden) {                alert('请复制链接并在外部浏览器中打开。');            }        }, 1000);    }})();