How to Fullscreen a Specific Element in a Web Page

Full control and how to modify styles in a website and web app

Browsers have built-in fullscreen capabilities, which you can access using shortcut keys such as F11 or ⌃⌘F. But it applies to the current page as a whole, what if we want a specific element (such as a game or video) to go fullscreen?

You can do this using the Fullscreen API provided by the browser environment. Not only does it display specific elements fullscreen, but it also allows you to control the style when fullscreen.

To see an example, let’s make a simple HTML first:

For comparison, I made different colors for container and target. Next, bind the listener event for target:

Here I use currentTarget, note that it always points to the element the event is attached to:

Here is the overall demo:

Click on the red area and you can see that only the red area has entered full-screen mode. The API it uses is Element.requestFullscreen(), but it may not work in some browsers due to different implementations like mozRequestFullScreen, webkitRequestFullscreen, etc.

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