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 Feature Policy of the current execution context and/or might not be
accessible because of user's permissions.
Syntax
const supportedFeatures = FeaturePolicy.features()
Parameters
None.
Return value
A list of strings that represent names of all Feature Policy directives supported by the User Agent.
Example
The followin example logs all the supported directives in the console.
// Get the Feature Policy object
const featurePolicy = document.featurePolicy
// Retreive the list of all supported Feature Policy directives
const supportedDirectives = featurePolicy.features()
// Print out each directive into the console
for (const directive of supportedDirectives){
console.log(directive)
}
Specifications
Specification | Status | Comment |
---|---|---|
Permissions Policy The definition of 'features' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
BCD tables only load in the browser