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cpuClass property (clientInformation, navigator)

Browser support:
Returns the central processing unit (CPU) class of the user's operating system.
In Firefox, use the oscpu property instead.
If you need to detect the type of the user's browser, please see the page for Browser detection. To get various information about the browser and the operating system of the user, please see the page for the navigator object and the example below.


You can find the related objects in the Supported by objects section below.
This property is read-only.

Possible values:

String that represents the class of the CPU.
One of the following values:
Motorola processor.
DEC processor.
Motorola processor.
Intel processor.
Other processor type.
Default: this property has no default value.

Example HTML code 1:

This example illustrates the cpuClass property:
    <script type="text/javascript">
        function GetCPU () {
            var output = document.getElementById ("output");
            output.innerHTML = "Information about the OS and CPU: " + navigator.oscpu;
            output.innerHTML += "<br />The class of CPU: " + navigator.cpuClass;
            output.innerHTML += "<br />System platform: " + navigator.platform;
<body onload="GetCPU ();">
    <div id="output"></div>
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Example HTML code 2:

This example displays various information about the browser and the operating system of the user:
    <script type="text/javascript">
        function AddRowToInfo (description, value) {
            if (value !== undefined) {
                var infoTable = document.getElementById ("info");
                var row = infoTable.insertRow (-1);
                var cell = row.insertCell (-1);
                cell.innerHTML = description;
       = "10px";
                cell = row.insertCell (-1);
                cell.innerHTML = value;
       = "10px";

        function GetVisitorInfo () {
            AddRowToInfo ("Name of the browser (appName)", window.navigator.appName);
            AddRowToInfo ("Name of the browser vendor (vendor)", window.navigator.vendor);
            AddRowToInfo ("Code name of the browser (appCodeName)", window.navigator.appCodeName);
            AddRowToInfo ("Engine of the browser (product)", window.navigator.product);
            AddRowToInfo ("Build number of the browser engine (productSub)", window.navigator.productSub);
            if (window.opera) {
                AddRowToInfo ("Build number of the browser (buildNumber)", window.opera.buildNumber ());
                AddRowToInfo ("Version number of the browser (version)", window.opera.version ());
            AddRowToInfo ("Version and platform of the browser (appVersion)", window.navigator.appVersion);
            AddRowToInfo ("Version of the browser given by the vendor (vendorSub)", window.navigator.vendorSub);
            AddRowToInfo ("Minor version of the browser (appMinorVersion)", window.navigator.appMinorVersion);
            AddRowToInfo ("Build identifier of the browser (buildID)", window.navigator.buildID);
            AddRowToInfo ("User-agent request header (userAgent)", window.navigator.userAgent);
            AddRowToInfo ("Language of the browser (language)", window.navigator.language);
            AddRowToInfo ("Cookies are enabled (cookieEnabled)", window.navigator.cookieEnabled);

            AddRowToInfo ("Operating system (platform)", window.navigator.platform);
            if (window.navigator.language === undefined) {  // in Opera, the language, browserLanguage and userLanguage properties are equivalent
                AddRowToInfo ("Language of the operating system's user interface (browserLanguage)", window.navigator.browserLanguage);
                AddRowToInfo ("Regional and Language settings of the operating system (userLanguage)", window.navigator.userLanguage);
            AddRowToInfo ("Language of the installed operating system (systemLanguage)", window.navigator.systemLanguage);
            AddRowToInfo ("Class of CPU (cpuClass)", window.navigator.cpuClass);
            AddRowToInfo ("Information about the OS and CPU (oscpu)", window.navigator.oscpu);
            AddRowToInfo ("System is online (onLine)", window.navigator.onLine);
<body onload="GetVisitorInfo ();">
    <table id="info" cellpadding="0px" cellspacing="0px" border="1px" style="empty-cells:show;">
            <col style="background-color: #e0a0b0;" />
            <col />
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Supported by objects:

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