allowfullscreen
an HTML attribute for the iframe tag

What does the allowfullscreen attribute do in an iframe?

Answers:

  • The allowfullscreen attribute in an <iframe> element is used to enable or disable the full-screen feature for the content being displayed within that iframe. When this attribute is present, it allows the user to enter full-screen mode for the content inside the iframe, typically by clicking a full-screen button that appears in the video or media player.

    Here’s how it works:

    • When allowfullscreen is present: The user can expand the iframe content to fill the entire screen, enhancing the viewing experience for videos, presentations, or other media.
    • When allowfullscreen is absent: The full-screen feature will be disabled, and users will not have the option to view the content in full-screen mode.

    Here’s a simple example of its usage:

    <iframe src="https://www.example.com" allowfullscreen></iframe>
    

    In this example, the allowfullscreen attribute allows users to enter full-screen mode for the content served from "https://www.example.com".

    Note that some browsers may also require a specific permission or settings to allow full-screen functionality, and additional attributes like allow can also be set for enhanced control over the iframe's capabilities.

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