How to detect my browser version and operating system using JavaScript?


I have tried using the code below but it only display results in Chrome and Mozilla not working in IE6.

<div id="example"></div>

<script type="text/javascript">

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>";

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

</script>

Output:

Browser CodeName: Mozilla

Browser Name: Netscape

Browser Version: 5.0 (Windows)

Cookies Enabled: true

Platform: Win32

User-agent header: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0

I need to get the version "Firefox/12.0" only.

Detecting browser's details:

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(''
 +'Browser name  = '+browserName+'<br>'
 +'Full version  = '+fullVersion+'<br>'
 +'Major version = '+majorVersion+'<br>'
 +'navigator.appName = '+navigator.appName+'<br>'
 +'navigator.userAgent = '+navigator.userAgent+'<br>'
)

Source JavaScript: browser name.
See JSFiddle to detect Browser Details.

Detecting OS:

// This script sets OSName variable as follows:
// "Windows"    for all versions of Windows
// "MacOS"      for all versions of Macintosh OS
// "Linux"      for all versions of Linux
// "UNIX"       for all other UNIX flavors 
// "Unknown OS" indicates failure to detect the OS

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";

document.write('Your OS: '+OSName);

source JavaScript: OS detection.
See JSFiddle to detect OS Details.

    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(''
     +'Browser name  = '+browserName+'<br>'
     +'Full version  = '+fullVersion+'<br>'
     +'Major version = '+majorVersion+'<br>'
     +'navigator.appName = '+navigator.appName+'<br>'
     +'navigator.userAgent = '+navigator.userAgent+'<br>'
    )

    // This script sets OSName variable as follows:
    // "Windows"    for all versions of Windows
    // "MacOS"      for all versions of Macintosh OS
    // "Linux"      for all versions of Linux
    // "UNIX"       for all other UNIX flavors 
    // "Unknown OS" indicates failure to detect the OS
    
    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";
    
    document.write('Your OS: '+OSName);


I'm sad to say: We are sh*t out of luck on this one.

I'd like to refer you to the author of WhichBrowser: Everybody lies.

Basically, no browser is being honest. No matter if you use Chrome or IE, they both will tell you that they are "Mozilla Netscape" with Gecko and Safari support. Try it yourself on any of the fiddles flying around in this thread:

hims056's fiddle

Hariharan's fiddle

or any other... Try it with Chrome (which might still succeed), then try it with a recent version of IE, and you will cry. Of course, there are heuristics, to get it all right, but it will be tedious to grasp all the edge cases, and they will very likely not work anymore in a year's time.

Take your code, for example:

<div id="example"></div>
<script type="text/javascript">
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>";
document.getElementById("example").innerHTML=txt;
</script>

Chrome says:

Browser CodeName: Mozilla

Browser Name: Netscape

Browser Version: 5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36

Cookies Enabled: true

Platform: Win32

User-agent header: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36

IE says:

Browser CodeName: Mozilla

Browser Name: Netscape

Browser Version: 5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; rv:11.0) like Gecko

Cookies Enabled: true

Platform: Win32

User-agent header: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; rv:11.0) like Gecko

At least Chrome still has a string that contains "Chrome" with the exact version number. But, for IE you must extrapolate from the things it supports to actually figure it out (who else would boast that they support .NET or Media Center :P), and then match it against the rv: at the very end to get the version number. Of course, even such sophisticated heuristics might very likely fail as soon as IE 12 (or whatever they want to call it) comes out.


There is a library for this purpose: https://github.com/bestiejs/platform.js#readme

Then you can use it this way

// example 1
platform.os; // 'Windows Server 2008 R2 / 7 x64'

// example 2 on an iPad
platform.os; // 'iOS 5.0'

// you can also access on the browser and some other properties
platform.name; // 'Safari'
platform.version; // '5.1'
platform.product; // 'iPad'
platform.manufacturer; // 'Apple'
platform.layout; // 'WebKit'

// or use the description to put all together
platform.description; // 'Safari 5.1 on Apple iPad (iOS 5.0)'

PPK's script is THE authority for this kind of things, as @Jalpesh said, this might point you in the right way

var wn = window.navigator,
        platform = wn.platform.toString().toLowerCase(),
        userAgent = wn.userAgent.toLowerCase(),
        storedName;

// ie
    if (userAgent.indexOf('msie',0) !== -1) {
        browserName = 'ie';
        os = 'win';
        storedName = userAgent.match(/msie[ ]\d{1}/).toString();
        version = storedName.replace(/msie[ ]/,'');

        browserOsVersion = browserName + version;
    }

Taken from https://github.com/leopic/jquery.detectBrowser.js/blob/sans-jquery/jquery.detectBrowser.sansjQuery.js


To detect operating system using JavaScript it is better to use navigator.userAgent instead of navigator.appVersion

{
  var OSName = "Unknown OS";
  if (navigator.userAgent.indexOf("Win") != -1) OSName = "Windows";
  if (navigator.userAgent.indexOf("Mac") != -1) OSName = "Macintosh";
  if (navigator.userAgent.indexOf("Linux") != -1) OSName = "Linux";
  if (navigator.userAgent.indexOf("Android") != -1) OSName = "Android";
  if (navigator.userAgent.indexOf("like Mac") != -1) OSName = "iOS";
  console.log('Your OS: ' + OSName);
}


Try this one..

// Browser with version  Detection
navigator.sayswho= (function(){
    var N= navigator.appName, ua= navigator.userAgent, tem;
    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;
})();

var browser_version          = navigator.sayswho;
alert("Welcome to " + browser_version);

check out the working fiddle ( here )


For Firefox, Chrome, Opera, Internet Explorer and Safari

var ua="Mozilla/1.22 (compatible; MSIE 10.0; Windows 3.1)";
//ua = navigator.userAgent;
var b;
var browser;
if(ua.indexOf("Opera")!=-1) {

    b=browser="Opera";
}
if(ua.indexOf("Firefox")!=-1 && ua.indexOf("Opera")==-1) {
    b=browser="Firefox";
    // Opera may also contains Firefox
}
if(ua.indexOf("Chrome")!=-1) {
    b=browser="Chrome";
}
if(ua.indexOf("Safari")!=-1 && ua.indexOf("Chrome")==-1) {
    b=browser="Safari";
    // Chrome always contains Safari
}

if(ua.indexOf("MSIE")!=-1 && (ua.indexOf("Opera")==-1 && ua.indexOf("Trident")==-1)) {
    b="MSIE";
    browser="Internet Explorer";
    //user agent with MSIE and Opera or MSIE and Trident may exist.
}

if(ua.indexOf("Trident")!=-1) {
    b="Trident";
    browser="Internet Explorer";
}

// now for version


var version=ua.match(b+"[ /]+[0-9]+(.[0-9]+)*")[0];

console.log("broswer",browser);
console.log("version",version);

I wasn't able to get some of the other answers to work on Chrome, Firefox, IE11, and Edge with the same code. I came up with the below and it appears to work for those browsers listed above. I also wanted to see what OS the user was on. I haven't tested this against a browser with user overridden User-Agent settings, so mileage may vary. The order of the IFs is important for this to work correctly.

let os, osStore, bStore, appVersion, browser;
// Chrome
if(navigator.vendor === "Google Inc."){
    appVersion = navigator.appVersion.split(" ");
    os = [appVersion[1],appVersion[2],appVersion[3],appVersion[4],appVersion[5]].join(" ");
    os = os.split("(")[1].split(")")[0]
    browser = appVersion[appVersion.length-2].split("/").join(" ");
    console.log("Browser:",browser,"- OS:",os);
}

// Safari
else if(navigator.vendor === "Apple Computer, Inc."){
    appVersion = navigator.appVersion.split(" ");
    os = [appVersion[1],appVersion[2],appVersion[3],appVersion[4],appVersion[5]].join(" ");
    os = os.split("(")[1].split(")")[0];
    browser = appVersion[appVersion.length-1].split("/").join(" ");
    console.log("Browser:",browser,"- OS:",os);
}

// Firefox is seems the only browser with oscpu
else if(navigator.oscpu){
    bStore = navigator.userAgent.split("; ").join("-").split(" ");
    browser = bStore[bStore.length-1].replace("/"," ");
    osStore = [bStore[1],bStore[2],bStore[3]].join(" ");
    osStore = osStore.split("-");
    osStore.pop(osStore.lastIndexOf)
    osStore = osStore.join(" ").split("(");
    os = osStore[1];
    console.log("Browser:",browser,"- OS:",os);
}

// IE is seems the only browser with cpuClass
// MSIE 11:10 Mode
else if(navigator.appName === "Microsoft Internet Explorer"){
    bStore = navigator.appVersion.split("; ");
    browser = bStore[1]+" / "+bStore[4].replace("/"," ");
    os = [bStore[2],bStore[3]].join(" ");
    console.log("Browser:",browser,"- OS:",os);
}

// MSIE 11
else if(navigator.cpuClass){
    bStore = navigator.appVersion.split("; ");
    osStore = [bStore[0],bStore[1]].join(" ");
    os = osStore.split("(")[1];
    browser = "MSIE 11 "+bStore[2].split("/").join(" ");
    console.log("Browser:",browser,"- OS:",os);
}

// Edge
else if(navigator.appVersion){
    browser = navigator.appVersion.split(" ");
    browser = browser[browser.length -1].split("/").join(" ");
    os = navigator.appVersion.split(")")[0].split("(")[1];
    console.log("Browser:",browser,"- OS:",os);
}

// Other browser
else {
    console.log(JSON.stringify(navigator));
}

Code to detect the operating system of an user

let os = navigator.userAgent.slice(13).split(';')
os = os[0]
console.log(os)
Windows NT 10.0

To get the new Microsoft Edge based on a Mozilla core add:

else if ((verOffset=nAgt.indexOf("Edg"))!=-1) {
 browserName = "Microsoft Edge";
 fullVersion = nAgt.substring(verOffset+5);
}

before

// In Chrome, the true version is after "Chrome" 
else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {
 browserName = "Chrome";
 fullVersion = nAgt.substring(verOffset+7);
}