判断各个端浏览器打开

                    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

                    // console.log(ua)

                    if (ua.match(/MicroMessenger/i) == "micromessenger") {

                        //在微信中打开

                    }

                    if (ua.match(/WeiBo/i) == "weibo") {

                        //在新浪微博客户端打开

                    }

                    // if (ua.match(/qq/i) == "qq" && ua.match(/MicroMessenger/i) != "micromessenger") {

                    //     //在QQ里面打开(安卓链接包含MicroMessenger和QQ所以要去除)

                    // }

                    if (ua.match(/txmicro/i) == "txmicro") {

                        //在腾讯微博(自定义)

                    }

                    if (browser.versions.ios) {

                        //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s

                    }

                //判断是否在qq打开

                isQQAPP();

                function isQQAPP(){

                    var isIosQQ = ( /(iPhone|iPad|iPod|iOS)/i.test(navigator.userAgent) && /\sQQ/i.test(navigator.userAgent));

                    var isAndroidQQ = ( /(Android)/i.test(navigator.userAgent) && /MQQBrowser/i.test(navigator.userAgent) && /\sQQ/i.test((navigator.userAgent).split('MQQBrowser')));

                    if(isIosQQ || isAndroidQQ){

                    //在QQ浏览器打开

                    }

                }