How Can I Make a Browser Window Full Screen Using JavaScript?

Making a Browser Window Full Screen with JavaScript

The ability to toggle a browser window to full screen enhances the user experience, especially for applications that require maximizing screen space. This cross-browser JavaScript solution enables you to seamlessly enter full screen mode.

Browser Support

Modern browsers such as Chrome 15, Firefox 10, Safari 5.1, and IE 10 natively support the full screen API. Older IE versions can leverage ActiveX to achieve the same result.

Implementation

Here's a JavaScript function that detects and uses the appropriate method for different browsers:

function requestFullScreen(element) {
    // Support various browsers
    var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullScreen;

    if (requestMethod) { // Native full screen
        requestMethod.call(element);
    } else if (typeof window.ActiveXObject !== "undefined") { // Older IE
        var wscript = new ActiveXObject("WScript.Shell");
        if (wscript !== null) {
            wscript.SendKeys("{F11}");
        }
    }
}

To use this function, simply call it on the element you want to expand to full screen, for instance, the body element for the entire page:

requestFullScreen(document.body);

User Acceptance

Note that fullscreen mode requires user acceptance. Automatically triggering it is not possible; it must be initiated by a user event, such as a button click.

For further details, refer to the Mozilla Developer Network documentation on Using Full-Screen Mode: https://developer.mozilla.org/en/DOM/Using_full-screen_mode

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