FeaturePolicy: features() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The features() method of the
FeaturePolicy interface returns a list of names of all features
supported by the User Agent. Feature whose name appears on the list might not be
allowed by the Permissions Policy of the current execution context and/or might not be
accessible because of user's permissions.
Syntax
js
features()
Parameters
None.
Return value
A list of strings that represent names of all Permissions Policy directives supported by the user agent.
Example
The following example logs all the supported directives in the console.
js
// Get the FeaturePolicy object
const featurePolicy = document.featurePolicy;
// Retrieve the list of all supported Permissions Policy directives
const supportedDirectives = featurePolicy.features();
// Print out each directive into the console
for (const directive of supportedDirectives) {
console.log(directive);
}
Specifications
This feature does not appear to be defined in any specification.Browser compatibility
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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.