What is the process for coding a button that, when clicked, will enable an iframe to go into full screen mode?

Is there a way to enlarge an iframe into fullscreen mode when a button is clicked? I have tried looking online for solutions, but most of them only explain how to make the entire window full screen, not just the iframe. Can someone assist me with making an embedded iframe go fullscreen upon clicking a button? Thank you!

Answer №1

To achieve a fullscreen effect, you need to take two steps: first, make the window fill the entire screen, and then ensure that the <iframe> also occupies the whole area.

You can use JavaScript to enable fullscreen mode, similar to what is explained in this Stack Overflow response.

Next, to expand the iframe to full size, apply certain styles as shown below. The provided JS snippet applies a class containing these styles to the <iframe>.

JavaScript:

document.getElementsByTagName("iframe")[0].className = "fullScreen";

CSS:

body, html {
    height: 100%;
    margin: 0;
}
.fullScreen {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

View an example with this setup on JSFiddle at this demo link.

*Please note that this JSFiddle example may not fully demonstrate the fullscreen functionality due to security restrictions, but it should work well for your implementation.

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