HTMLIFrameElement: allowFullscreen property

{{APIRef("HTML DOM")}}

The allowFullscreen property of the {{domxref("HTMLIFrameElement")}} interface is a boolean value that reflects the allowfullscreen attribute of the {{HTMLElement("iframe")}} element, indicating whether to allow the iframe's contents to use {{domxref("Element.requestFullscreen", "requestFullscreen()")}}.

[!NOTE] This property is considered a legacy property. Use allow="fullscreen" and {{domxref("HTMLIFrameElement.allow")}} instead.

Value

A boolean value.

Examples

<iframe id="el" allowfullscreen></iframe>

const el = document.getElementById("el");
console.log(el.allowFullscreen); // Output: true

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Fullscreen API
• {{domxref("Element.requestFullscreen()")}}
• Permissions Policy
• {{httpheader("Permissions-Policy/fullscreen", "fullscreen")}} Permissions Policy directive