判断浏览器

function isBroswer () {//检测浏览器内核--返回的是两个key，name：浏览器内核的名称---version：浏览器的版本号
       var _broswer = {};
       var sUserAgent = navigator.userAgent;
       var isOpera = sUserAgent.indexOf("Opera") > -1;
       if (isOpera) {
           //首先检测Opera是否进行了伪装
           if (navigator.appName == 'Opera') {
               //如果没有进行伪装，则直接后去版本号
               _broswer.version = parseFloat(navigator.appVersion);
           } else {
               var reOperaVersion = new RegExp("Opera (\\d+.\\d+)");
               //使用正则表达式的test方法测试并将版本号保存在RegExp.$1中
               reOperaVersion.test(sUserAgent);
               _broswer.version = parseFloat(RegExp['$1']);
           }
           _broswer.opera = true;
           _broswer.name = 'opera';
       }
       var isChrome = sUserAgent.indexOf("Chrome") > -1;
       if (isChrome) {
           var reChorme = new RegExp("Chrome/(\\d+\\.\\d+(?:\\.\\d+\\.\\d+))?");
           reChorme.test(sUserAgent);
           _broswer.version = parseFloat(RegExp['$1']);
           _broswer.chrome = true;
           _broswer.name = 'chrome';
       }
       //排除Chrome信息，因为在Chrome的user-agent字符串中会出现Konqueror/Safari的关键字
       var isKHTML = (sUserAgent.indexOf("KHTML") > -1
           || sUserAgent.indexOf("Konqueror") > -1 || sUserAgent
               .indexOf("AppleWebKit") > -1)
           && !isChrome;
       if (isKHTML) {//判断是否基于KHTML，如果时的话在继续判断属于何种KHTML浏览器
           var isSafari = sUserAgent.indexOf("AppleWebKit") > -1;
           var isKonq = sUserAgent.indexOf("Konqueror") > -1;
           if (isSafari) {
               var reAppleWebKit = new RegExp("Version/(\\d+(?:\\.\\d*)?)");
               reAppleWebKit.test(sUserAgent);
               var fAppleWebKitVersion = parseFloat(RegExp["$1"]);
               _broswer.version = parseFloat(RegExp['$1']);
               _broswer.safari = true;
               _broswer.name = 'safari';
           } else if (isKonq) {
               var reKong = new RegExp(
                   "Konqueror/(\\d+(?:\\.\\d+(?\\.\\d)?)?)");
               reKong.test(sUserAgent);
               _broswer.version = parseFloat(RegExp['$1']);
               _broswer.konqueror = true;
               _broswer.name = 'konqueror';
           }
       }
       // !isOpera 避免是由Opera伪装成的IE
       var isIE = sUserAgent.indexOf("compatible") > -1
           && sUserAgent.indexOf("MSIE") > -1 && !isOpera;
       if (isIE) {
           var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
           reIE.test(sUserAgent);
           _broswer.version = parseFloat(RegExp['$1']);
           _broswer.msie = true;
           _broswer.name = 'msie';
       }
       // 排除Chrome 及 Konqueror/Safari 的伪装
       var isMoz = sUserAgent.indexOf("Gecko") > -1 && !isChrome && !isKHTML;
       if (isMoz) {
           var reMoz = new RegExp("rv:(\\d+\\.\\d+(?:\\.\\d+)?)");
           reMoz.test(sUserAgent);
           _broswer.version = parseFloat(RegExp['$1']);
           _broswer.mozilla = true;
           _broswer.name = 'mozilla';
       }
       return _broswer;
    }
    
    // 判断ie的版本
    function IEVersion() {
        var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
        var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1; //判断是否IE<11浏览器
        var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器
        var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf("rv:11.0") > -1;
        if(isIE) {
            var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
            reIE.test(userAgent);
            var fIEVersion = parseFloat(RegExp["$1"]);
            if(fIEVersion == 7) {
                return 7;
            } else if(fIEVersion == 8) {
                return 8;
            } else if(fIEVersion == 9) {
                return 9;
            } else if(fIEVersion == 10) {
                return 10;
            } else {
                return 6;//IE版本<=7
            }
        } else if(isIE11) {
            return 11; //IE11
        }else{
            return 99;//不是ie浏览器
        }
    }
    var ieVersion = IEVersion();
    var notChromeBrowser = isBroswer();
    
    // 内核
    var browser={
  versions:function(){
    var u = navigator.userAgent, app = navigator.appVersion;
    return {
      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('Adr') > -1, //android终端
      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 （2015-01-22新增）
      qq: u.match(/\sQQ/i) == " qq" //是否QQ
    };
  }(),
  language:(navigator.browserLanguage || navigator.language).toLowerCase()
}