javascript 获取浏览器版本

工作中需要通过JS去获取当前使用的浏览器的名字以及版本号，网上大堆资料都有一个关键词是 navigator.appName，但是这个方法获取的浏览器的名字只有两种要么是IE要么就是Netscap，倒是可以用来判断是否使用了IE，但是我想获取具体的浏览器产品名字比如  Firefox，Chrome等。

function BroswerUtil() {

}

BroswerUtil.prototype = {

    getBrowserVersion: function () {

        var agent = navigator.userAgent.toLowerCase();

        var arr = [];

        var Browser = "";

        var Bversion = "";

        var verinNum = "";

        //IE

        if (agent.indexOf("msie") > 0) {

            var regStr_ie = /msie [\d.]+;/gi;

            Browser = "IE";

            Bversion = "" + agent.match(regStr_ie)

        }

        //firefox

        else if (agent.indexOf("firefox") > 0) {

            var regStr_ff = /firefox\/[\d.]+/gi;

            Browser = "firefox";

            Bversion = "" + agent.match(regStr_ff);

        }

        //Chrome

        else if (agent.indexOf("chrome") > 0) {

            var regStr_chrome = /chrome\/[\d.]+/gi;

            Browser = "chrome";

            Bversion = "" + agent.match(regStr_chrome);

        }

        //Safari

        else if (agent.indexOf("safari") > 0 && agent.indexOf("chrome") < 0) {

            var regStr_saf = /version\/[\d.]+/gi;

            Browser = "safari";

            Bversion = "" + agent.match(regStr_saf);

        }

        //Opera

        else if (agent.indexOf("opera") >= 0) {

            var regStr_opera = /version\/[\d.]+/gi;

            Browser = "opera";

            Bversion = "" + agent.match(regStr_opera);

        } else {

            var browser = navigator.appName;

            if (browser == "Netscape") {

                var version = agent.split(";");

                var trim_Version = version[7].replace(/[ ]/g, "");

                var rvStr = trim_Version.match(/[\d\.]/g).toString();

                var rv = rvStr.replace(/[,]/g, "");

                Bversion = rv;

                Browser = "IE"

            }

        }

        verinNum = (Bversion + "").replace(/[^0-9.]/ig, "");

        arr.push(Browser);

        arr.push(verinNum);

        return arr;

    },

    WB: (function () {

        var UserAgent = navigator.userAgent.toLowerCase();

        alert(UserAgent)

        return {

            isIE6: /msie 6.0/.test(UserAgent), // IE6

            isIE7: /msie 7.0/.test(UserAgent), // IE7

            isIE8: /msie 8.0/.test(UserAgent), // IE8

            isIE9: /msie 9.0/.test(UserAgent), // IE9

            isIE10: /msie 10.0/.test(UserAgent), // IE10

            isIE11: /msie 11.0/.test(UserAgent), // IE11

            isLB: /lbbrowser/.test(UserAgent), // 猎豹浏览器

            isUc: /ucweb/.test(UserAgent), // UC浏览器

            is360: /360se/.test(UserAgent), // 360浏览器

            isBaidu: /bidubrowser/.test(UserAgent), // 百度浏览器

            isSougou: /metasr/.test(UserAgent), // 搜狗浏览器

            isChrome: /chrome/.test(UserAgent.substr(-33, 6)), // Chrome浏览器

            isFirefox: /firefox/.test(UserAgent), // 火狐浏览器

            isOpera: /opera/.test(UserAgent),  // Opera浏览器

            isSafire: /safari/.test(UserAgent) && !/chrome/.test(UserAgent), // safire浏览器

            isQQ:/qqbrowser/.test(UserAgent)//qq浏览器

        };

    })()

}

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