FeaturePolicy

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

The FeaturePolicy interface represents the set of Permissions Policies applied to the current execution context.

Instance methods

FeaturePolicy.allowsFeature Experimental

Returns a Boolean that indicates whether or not a particular feature is enabled in the specified context.

FeaturePolicy.features Experimental

Returns a list of names of all features supported by the User Agent. Features whose names appear on the list might not be allowed by the Permissions Policy of the current execution context and/or might be restricted by user-granted permissions.

FeaturePolicy.allowedFeatures Experimental

Returns a list of names of all features supported by the User Agent and allowed by the Permissions Policy. Note that features appearing on this list might still be behind a user permission.

FeaturePolicy.getAllowlistForFeature Experimental

Returns the allow for the specified feature.

Specifications

No specification found

No specification data found for api.FeaturePolicy.
Check for problems with this page or contribute a missing spec_url to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.

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
FeaturePolicy
Experimental
allowedFeatures
Experimental
allowsFeature
Experimental
features
Experimental
getAllowlistForFeature
Experimental

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.
Uses a non-standard name.

See also