allowfullscreen
an HTML attribute for the iframe tag

What is the difference between allowfullscreen and webkitallowfullscreen?

Answers:

  • The attributes allowfullscreen and webkitallowfullscreen are used in HTML to control whether an embedded video (for example, in an <iframe> that displays a video from a source like YouTube) can be displayed in full-screen mode. However, there are some differences between the two:

    1. allowfullscreen:

      • This is the standard attribute defined in HTML5. It is widely supported across all modern browsers (including Chrome, Firefox, Edge, and Safari).
      • By including the allowfullscreen attribute in an <iframe>, you allow users to enter full-screen mode for the embedded content.

    2. webkitallowfullscreen:

      • This is a vendor-specific attribute primarily for WebKit-based browsers, such as older versions of Safari and Chrome.
      • It was introduced before the HTML5 allowfullscreen attribute became widely adopted, and in some older browsers, using webkitallowfullscreen would be necessary to enable full-screen functionality.

    Best Practices:

    • For modern web development, you should generally use the standard allowfullscreen attribute because it is supported across all modern browsers.
    • Including both attributes (allowfullscreen and webkitallowfullscreen) in the <iframe> tag can be a good practice for legacy support, but allowfullscreen is sufficient in most cases.

    Example:

    <iframe src="https://www.example.com/video" 
        width="560" 
        height="315" 
        allowfullscreen 
        webkitallowfullscreen>
</iframe>

    In this example, both attributes are included, but allowfullscreen is the primary attribute you should rely on for modern implementations.

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