HTMLIFrameElement: allow property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2020.

The allow property of the HTMLIFrameElement interface indicates the Permissions Policy specified for this <iframe> element. The policy defines what features are available to the <iframe> element (for example, access to the microphone, camera, battery, web-share, etc.) based on the origin of the request.

The Permissions Policy specified by the allow attribute implements a further restriction on top of the policy specified in the Permissions-Policy header. It doesn't replace it.

See <iframe>'s Permissions Policy syntax for more details.

It reflects the allow attribute of the <iframe> element.

Value

A string indicates the Permissions Policy specified for this <iframe> element, each policy must be separated by space.

Examples

html
<iframe
  id="el"
  src="https://example.com"
  allow="geolocation 'self' https://a.example.com https://b.example.com; fullscreen 'none'"></iframe>

js
const el = document.getElementById("el");
console.log(el.allow); // Output: "geolocation 'self' https://a.example.com https://b.example.com; fullscreen 'none'"

See Permissions Policy in <iframe> element for more available examples.