HTMLFencedFrameElement: allow property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The allow property of the HTMLFencedFrameElement gets and sets the value of the corresponding <fencedframe> allow attribute, which represents a Permissions Policy applied to the content when it is first embedded.

Not all permissions policies are allowed in fenced frames. The allowed permissions are listed at Permissions policies available to fenced frames — these are required for fenced frame content originating from the specified APIs to load. If you don't set the allow attribute, those permissions will be allowed by default. If you want to narrow down the permissions set, you need to make sure that all of the required permissions for the APIs you are using are set in the allow attribute.

Value

A string representing a Permissions Policy.

Examples

js
const frame = document.createElement("fencedframe");
console.log(frame.allow);

Specifications

Specification
Fenced Frame
# dom-htmlfencedframeelement-allow

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
allow
Experimental

Legend

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Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.

See also