//Copy and paste this into your code/text editor, and try it

//Before you use this to fix compatability bugs, it's best to try inform the browser provider that you have found a bug and there latest browser may not be up to date with the current web standards

//Since none of the browsers use the browser identification system properly you need to do something a bit like this

//Write browser identification
document.write(navigator.userAgent + "<br>")

//Detect browser and write the corresponding name
if (navigator.userAgent.search("MSIE") >= 0){
    document.write('"MS Internet Explorer ');
    var position = navigator.userAgent.search("MSIE") + 5;
    var end = navigator.userAgent.search("; Windows");
    var version = navigator.userAgent.substring(position,end);
    document.write(version + '"');
}
else if (navigator.userAgent.search("Chrome") >= 0){
document.write('"Google Chrome ');// For some reason in the browser identification Chrome contains the word "Safari" so when detecting for Safari you need to include Not Chrome
    var position = navigator.userAgent.search("Chrome") + 7;
    var end = navigator.userAgent.search(" Safari");
    var version = navigator.userAgent.substring(position,end);
    document.write(version + '"');
}
else if (navigator.userAgent.search("Firefox") >= 0){
    document.write('"Mozilla Firefox ');
    var position = navigator.userAgent.search("Firefox") + 8;
    var version = navigator.userAgent.substring(position);
    document.write(version + '"');
}
else if (navigator.userAgent.search("Safari") >= 0 && navigator.userAgent.search("Chrome") < 0){//<< Here
    document.write('"Apple Safari ');
    var position = navigator.userAgent.search("Version") + 8;
    var end = navigator.userAgent.search(" Safari");
    var version = navigator.userAgent.substring(position,end);
    document.write(version + '"');
}
else if (navigator.userAgent.search("Opera") >= 0){
    document.write('"Opera ');
    var position = navigator.userAgent.search("Version") + 8;
    var version = navigator.userAgent.substring(position);
    document.write(version + '"');
}
else{
    document.write('"Other"');
}

//Use w3schools research the `search()` method as other methods are availible

由于Internet Explorer 11 (IE11+)出来了，不再使用MSIE的标记名称，我提出了一个旧检测函数的变体:

navigator.sayswho= (function(){
    var N= navigator.appName, ua= navigator.userAgent, tem;

    // if IE11+
    if (new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})").exec(ua) !== null) {
        var M= ["Internet Explorer"];
        if(M && (tem= ua.match(/rv:([0-9]{1,}[\.0-9]{0,})/))!= null) M[2]= tem[1];
        M= M? [M[0], M[2]]: [N, navigator.appVersion,'-?'];
        return M;
    }

    var M= ua.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);
    if(M && (tem= ua.match(/version\/([\.\d]+)/i))!= null) M[2]= tem[1];
    M= M? [M[1], M[2]]: [N, navigator.appVersion,'-?'];
    return M;
})();

所有关于web浏览器的信息都包含在navigator对象中。名字和版本都在那里。

var appname = window.navigator.appName;

来源:javascript浏览器检测

这是我写来获取客户信息的

var ua = navigator.userAgent.toLowerCase();
var check = function(r) {
    return r.test(ua);
};
var DOC = document;
var isStrict = DOC.compatMode == "CSS1Compat";
var isOpera = check(/opera/);
var isChrome = check(/chrome/);
var isWebKit = check(/webkit/);
var isSafari = !isChrome && check(/safari/);
var isSafari2 = isSafari && check(/applewebkit\/4/); // unique to
// Safari 2
var isSafari3 = isSafari && check(/version\/3/);
var isSafari4 = isSafari && check(/version\/4/);
var isIE = !isOpera && check(/msie/);
var isIE7 = isIE && check(/msie 7/);
var isIE8 = isIE && check(/msie 8/);
var isIE6 = isIE && !isIE7 && !isIE8;
var isGecko = !isWebKit && check(/gecko/);
var isGecko2 = isGecko && check(/rv:1\.8/);
var isGecko3 = isGecko && check(/rv:1\.9/);
var isBorderBox = isIE && !isStrict;
var isWindows = check(/windows|win32/);
var isMac = check(/macintosh|mac os x/);
var isAir = check(/adobeair/);
var isLinux = check(/linux/);
var isSecure = /^https/i.test(window.location.protocol);
var isIE7InIE8 = isIE7 && DOC.documentMode == 7;

var jsType = '', browserType = '', browserVersion = '', osName = '';
var ua = navigator.userAgent.toLowerCase();
var check = function(r) {
    return r.test(ua);
};

if(isWindows){
    osName = 'Windows';

    if(check(/windows nt/)){
        var start = ua.indexOf('windows nt');
        var end = ua.indexOf(';', start);
        osName = ua.substring(start, end);
    }
} else {
    osName = isMac ? 'Mac' : isLinux ? 'Linux' : 'Other';
} 

if(isIE){
    browserType = 'IE';
    jsType = 'IE';

    var versionStart = ua.indexOf('msie') + 5;
    var versionEnd = ua.indexOf(';', versionStart);
    browserVersion = ua.substring(versionStart, versionEnd);

    jsType = isIE6 ? 'IE6' : isIE7 ? 'IE7' : isIE8 ? 'IE8' : 'IE';
} else if (isGecko){
    var isFF =  check(/firefox/);
    browserType = isFF ? 'Firefox' : 'Others';;
    jsType = isGecko2 ? 'Gecko2' : isGecko3 ? 'Gecko3' : 'Gecko';

    if(isFF){
        var versionStart = ua.indexOf('firefox') + 8;
        var versionEnd = ua.indexOf(' ', versionStart);
        if(versionEnd == -1){
            versionEnd = ua.length;
        }
        browserVersion = ua.substring(versionStart, versionEnd);
    }
} else if(isChrome){
    browserType = 'Chrome';
    jsType = isWebKit ? 'Web Kit' : 'Other';

    var versionStart = ua.indexOf('chrome') + 7;
    var versionEnd = ua.indexOf(' ', versionStart);
    browserVersion = ua.substring(versionStart, versionEnd);
}else{
    browserType = isOpera ? 'Opera' : isSafari ? 'Safari' : '';
}

你可以扫描用户代理来查找浏览器名称，而不是硬编码web浏览器:

navigator.userAgent.split(')').reverse()[0].match(/(?!Gecko|Version|[A-Za-z]+?Web[Kk]it)[A-Z][a-z]+/g)[0]

我已经在Safari、Chrome和Firefox上进行了测试。如果您发现这在浏览器上不起作用，请告诉我。

Safari:“旅行” 铬:“铬” Firefox:“火狐”

如果需要，您甚至可以修改它以获得浏览器版本。请注意，有更好的方法来获得浏览器版本

navigator.userAgent.split(')').reverse()[0].match(/(?!Gecko|Version|[A-Za-z]+?Web[Kk]it)[A-Z][a-z]+\/[\d.]+/g)[0].split('/')

样例输出:

Firefox/39.0    

这将告诉您有关浏览器及其版本的所有详细信息。

<!DOCTYPE html>
<html>
<body>
<div id="example"></div>

<script>

txt = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
txt+= "<p>Browser Name: " + navigator.appName + "</p>";
txt+= "<p>Browser Version: " + navigator.appVersion + "</p>";
txt+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
txt+= "<p>Platform: " + navigator.platform + "</p>";
txt+= "<p>User-agent header: " + navigator.userAgent + "</p>";
txt+= "<p>User-agent language: " + navigator.systemLanguage + "</p>";

document.getElementById("example").innerHTML=txt;

</script>

</body>
</html>