JS自动识别浏览器

来源：互联网发布：金蝶k3无法数据引出编辑：程序博客网时间：2024/05/17 07:36
可以识别浏览器类型及版本号，
var userAgent = navigator.userAgent,     rMsie = /(msie\s|trident.*rv:)([\w.]+)/,        //IE    rFirefox = /(firefox)\/([\w.]+)/,           //Firefox    rOpera = /(opera).+version\/([\w.]+)/,      //Opera    rChrome = /(chrome)\/([\w.]+)/,             //Chrome    rMicromessenger = /(micromessenger)\/([\w.]+)/,     //微信    rSafari = /version\/([\w.]+).*(safari)/;    var browser;    var version;    function uaMatch(ua) {            var match = rMsie.exec(ua);        if (match != null) {            return { browser : "IE", version : match[2] || "0" };        }         var match = rFirefox.exec(ua);        if (match != null) {            return { browser : match[1] || "", version : match[2] || "0" };        }         var match = rOpera.exec(ua);        if (match != null) {            return { browser : match[1] || "", version : match[2] || "0" };        }        var match = rChrome.exec(ua);        if (match != null) {            return { browser : match[1] || "", version : match[2] || "0" };        }        var match = rMicromessenger.exec(ua);        if (match != null) {            return { browser : match[1] || "", version : match[2] || "0" };        }        var match = rSafari.exec(ua);        if (match != null) {            return { browser : match[2] || "", version : match[1] || "0" };        }        if (match != null) {            return { browser : "", version : "0" };        }    }     var browserMatch = uaMatch(userAgent.toLowerCase());        if (browserMatch.browser)     {        browser = browserMatch.browser;        version = browserMatch.version;        }    alert(browser+version);
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