javascript浏览器检测

<script type="text/javascript">

 

/**

 * 获取浏览器类型以及版本号

 * 支持国产浏览器:猎豹浏览器、搜狗浏览器、傲游浏览器、360极速浏览器、360安全浏览器、

 * QQ浏览器、百度浏览器等.

 * 支持国外浏览器:IE,Firefox,Chrome,safari,Opera等.

 * 使用方法:

 * 获取浏览器版本:Browser.client.version

 * 获取浏览器名称(外壳):Browser.client.name

 * @author:xuzengqiang

 * @since :2015-1-27 10:26:11

**/

var Browser=Browser || (function(window){

    var document = window.document,

        navigator = window.navigator,

        agent = navigator.userAgent.toLowerCase(),

        //IE8+支持.返回浏览器渲染当前文档所用的模式

        //IE6,IE7:undefined.IE8:8(兼容模式返回7).IE9:9(兼容模式返回7||8)

        //IE10:10(兼容模式7||8||9)

        IEMode = document.documentMode,    

        //chorme

        chrome = window.chrome || false,

        System = {

            //user-agent

            agent : agent,

            //是否为IE

            isIE : /msie/.test(agent),

            //Gecko内核

            isGecko: agent.indexOf("gecko")>0 && agent.indexOf("like gecko")<0,

            //webkit内核

            isWebkit: agent.indexOf("webkit")>0,

            //是否为标准模式

            isStrict: document.compatMode === "CSS1Compat",

            //是否支持subtitle

            supportSubTitle:function(){

                return "track" in document.createElement("track");

            },

            //是否支持scoped

            supportScope:function(){

                return "scoped" in document.createElement("style");

            },

            //获取IE的版本号

            ieVersion:function(){

                try {

                   return agent.match(/msie ([\d.]+)/)[1] || 0;

                } catch(e) {

                   console.log("error");

                   return IEMode;

                }

            },

            //Opera版本号

            operaVersion:function(){

                try {

                    if(window.opera) {

                        return agent.match(/opera.([\d.]+)/)[1];

                    } else if(agent.indexOf("opr") > 0) {

                        return agent.match(/opr\/([\d.]+)/)[1];

                    }

                } catch(e) {

                    console.log("error");

                    return 0;

                }

            },

            //描述:version过滤.如31.0.252.152 只保留31.0

            versionFilter:function(){

                if(arguments.length === 1 && typeof arguments[0] === "string") {

                    var version = arguments[0];

                        start = version.indexOf(".");

                    if(start>0){

                        end = version.indexOf(".",start+1);

                        if(end !== -1) {

                            return version.substr(0,end);

                        }

                    }

                    return version;

                } else if(arguments.length === 1) {

                    return arguments[0];

                }

                return 0;

            }

        };

         

    try {

        //浏览器类型(IE、Opera、Chrome、Safari、Firefox)

        System.type = System.isIE?"IE":

            window.opera || (agent.indexOf("opr") > 0)?"Opera":

            (agent.indexOf("chrome")>0)?"Chrome":

            //safari也提供了专门的判定方式

            window.openDatabase?"Safari":

            (agent.indexOf("firefox")>0)?"Firefox":     

            'unknow';

             

        //版本号  

        System.version = (System.type === "IE")?System.ieVersion():

            (System.type === "Firefox")?agent.match(/firefox\/([\d.]+)/)[1]:

            (System.type === "Chrome")?agent.match(/chrome\/([\d.]+)/)[1]:

            (System.type === "Opera")?System.operaVersion():

            (System.type === "Safari")?agent.match(/version\/([\d.]+)/)[1]:

            "0";

         

        //浏览器外壳

        System.shell=function(){

            //遨游浏览器

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

                System.version = agent.match(/maxthon\/([\d.]+)/)[1] || System.version ;

                return "傲游浏览器";

            }

            //QQ浏览器

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

                System.version = agent.match(/qqbrowser\/([\d.]+)/)[1] || System.version ;

                return "QQ浏览器";

            }

             

            //搜狗浏览器

            if( agent.indexOf("se 2.x")>0) {

                return '搜狗浏览器';

            }

             

            //Chrome:也可以使用window.chrome && window.chrome.webstore判断

            if(chrome && System.type !== "Opera") {

                var external = window.external,

                    clientInfo = window.clientInformation,

                    //客户端语言:zh-cn,zh.360下面会返回undefined

                    clientLanguage = clientInfo.languages;

                 

                //猎豹浏览器:或者agent.indexOf("lbbrowser")>0

                if( external && 'LiebaoGetVersion' in external) {

                     return '猎豹浏览器';

                }

                //百度浏览器

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

                    System.version = agent.match(/bidubrowser\/([\d.]+)/)[1] ||

                        agent.match(/chrome\/([\d.]+)/)[1];

                    return "百度浏览器";

                }

                //360极速浏览器和360安全浏览器

                if( System.supportSubTitle() && typeof clientLanguage === "undefined") {

                    //object.key()返回一个数组.包含可枚举属性和方法名称

                    var storeKeyLen = Object.keys(chrome.webstore).length,

                        v8Locale = "v8Locale" in window;

                    return storeKeyLen > 1? '360极速浏览器':'360安全浏览器';  

                }

                return "Chrome";

            }

            return System.type;      

        };

 

        //浏览器名称(如果是壳浏览器,则返回壳名称)

        System.name = System.shell();

        //对版本号进行过滤过处理

        System.version = System.versionFilter(System.version);

         

    } catch(e) {

        console.log("error");

    }

    return {

        client:System

    };

     

})(window);

alert(Browser.client.name+" "+Browser.client.version);

</script>