const isChrome = /Chrome/.test(navigator.userAgent)
const isFirefox = /Firefox/.test(navigator.userAgent)

我们可以使用下面的util方法

utils.isIE = function () {
        var ver = navigator.userAgent;
        return ver.indexOf("MSIE") !== -1 || ver.indexOf("Trident") !== -1; // need to check for Trident for IE11
    };

    utils.isIE32 = function () {
        return (utils.isIE() && navigator.appVersion.indexOf('Win64') === -1);
    };

    utils.isChrome = function () {
        return (window.chrome);
    };

    utils.isFF64 = function () {
        var agent = navigator.userAgent;
        return (agent.indexOf('Win64') >= 0 && agent.indexOf('Firefox') >= 0);
    };

    utils.isFirefox = function () {
        return (navigator.userAgent.toLowerCase().indexOf('firefox') > -1);
    };

简单:

var OSName="Unknown OS"; if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows"; if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS"; if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX"; if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux"; if (navigator.appVersion.indexOf("Linux x86_64")!=-1) OSName="Ubuntu"; var nVer = navigator.appVersion; var nAgt = navigator.userAgent; var browserName = navigator.appName; var fullVersion = ''+parseFloat(navigator.appVersion); var majorVersion = parseInt(navigator.appVersion,10); var nameOffset,verOffset,ix; // In Opera, the true version is after "Opera" or after "Version" if ((verOffset=nAgt.indexOf("Opera"))!=-1) { browserName = "Opera"; fullVersion = nAgt.substring(verOffset+6); if ((verOffset=nAgt.indexOf("Version"))!=-1) fullVersion = nAgt.substring(verOffset+8); } // In MSIE, the true version is after "MSIE" in userAgent else if ((verOffset=nAgt.indexOf("MSIE"))!=-1) { browserName = "Microsoft Internet Explorer"; fullVersion = nAgt.substring(verOffset+5); } // In Chrome, the true version is after "Chrome" else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) { browserName = "Chrome"; fullVersion = nAgt.substring(verOffset+7); } // In Safari, the true version is after "Safari" or after "Version" else if ((verOffset=nAgt.indexOf("Safari"))!=-1) { browserName = "Safari"; fullVersion = nAgt.substring(verOffset+7); if ((verOffset=nAgt.indexOf("Version"))!=-1) fullVersion = nAgt.substring(verOffset+8); } // In Firefox, the true version is after "Firefox" else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) { browserName = "Firefox"; fullVersion = nAgt.substring(verOffset+8); } // In most other browsers, "name/version" is at the end of userAgent else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) < (verOffset=nAgt.lastIndexOf('/')) ) { browserName = nAgt.substring(nameOffset,verOffset); fullVersion = nAgt.substring(verOffset+1); if (browserName.toLowerCase()==browserName.toUpperCase()) { browserName = navigator.appName; } } // trim the fullVersion string at semicolon/space if present if ((ix=fullVersion.indexOf(";"))!=-1) fullVersion=fullVersion.substring(0,ix); if ((ix=fullVersion.indexOf(" "))!=-1) fullVersion=fullVersion.substring(0,ix); majorVersion = parseInt(''+fullVersion,10); if (isNaN(majorVersion)) { fullVersion = ''+parseFloat(navigator.appVersion); majorVersion = parseInt(navigator.appVersion,10); } document.write('' +'Hey! i see you\'re using '+browserName+'! <br>' +'The full version of it is '+fullVersion+'. <br>' +'Your major version is '+majorVersion+', <br>' +'And your "navigator.appName" is '+navigator.appName+'. <br>' +'Your "navigator.userAgent" is '+navigator.userAgent+'. <br>' ) document.write('And, your OS is '+OSName+'. <br>');

我知道这可能是使用一个库，但只是为了丰富线程，你可以检查is.js的方式:

is.firefox();
is.ie(6);
is.not.safari();

检测桌面和移动浏览器:Edge, Opera, Chrome, Safari, Firefox, IE

我在@nimesh代码中做了一些更改，现在它也适用于Edge， 和Opera问题修复:

function getBrowserName() {

    if ( navigator.userAgent.indexOf("Edge") > -1 && navigator.appVersion.indexOf('Edge') > -1 ) {
        return 'Edge';
    }
    else if( navigator.userAgent.indexOf("Opera") != -1 || navigator.userAgent.indexOf('OPR') != -1 )
    {
        return 'Opera';
    }
    else if( navigator.userAgent.indexOf("Chrome") != -1 )
    {
        return 'Chrome';
    }
    else if( navigator.userAgent.indexOf("Safari") != -1)
    {
        return 'Safari';
    }
    else if( navigator.userAgent.indexOf("Firefox") != -1 ) 
    {
        return 'Firefox';
    }
    else if( ( navigator.userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true ) ) //IF IE > 10
    {
        return 'IE';
    }  
    else 
    {
        return 'unknown';
    }
}

谢谢@nimesh用户:2063564

谢谢大家。我在最近的浏览器上测试了这里的代码片段:Chrome 55、Firefox 50、IE 11和Edge 38，我想出了下面的组合，对所有这些浏览器都适用。我相信这是可以改进的，但对于任何需要的人来说，这是一个快速的解决方案:

var browser_name = '';
isIE = /*@cc_on!@*/false || !!document.documentMode;
isEdge = !isIE && !!window.StyleMedia;
if(navigator.userAgent.indexOf("Chrome") != -1 && !isEdge)
{
    browser_name = 'chrome';
}
else if(navigator.userAgent.indexOf("Safari") != -1 && !isEdge)
{
    browser_name = 'safari';
}
else if(navigator.userAgent.indexOf("Firefox") != -1 ) 
{
    browser_name = 'firefox';
}
else if((navigator.userAgent.indexOf("MSIE") != -1 ) || (!!document.documentMode == true )) //IF IE > 10
{
    browser_name = 'ie';
}
else if(isEdge)
{
    browser_name = 'edge';
}
else 
{
   browser_name = 'other-browser';
}
$('html').addClass(browser_name);

它将一个CSS类添加到HTML中，带有浏览器的名称。