MediaKeyStatusMap

Baseline

Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2019.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The MediaKeyStatusMap interface of the Encrypted Media Extensions API is a read-only map of media key statuses by key IDs.

Instance properties

MediaKeyStatusMap.size Read only: Returns the number of key/value pairs in the status map.

MediaKeyStatusMap.entries(): Returns a new Iterator object containing an array of [key, value] for each element in the status map, in insertion order.
MediaKeyStatusMap.forEach(): Calls callback once for each key-value pair in the status map, in insertion order. If argument is present it will be passed to the callback.
MediaKeyStatusMap.get(): Returns the value associated with the given key, or undefined if there is none.
MediaKeyStatusMap.has(): Returns a boolean asserting whether a value has been associated with the given key.
MediaKeyStatusMap.keys(): Returns a new Iterator object containing keys for each element in the status map, in insertion order.
MediaKeyStatusMap.values(): Returns a new Iterator object containing values for each element in the status map, in insertion order.
MediaKeyStatusMap[Symbol.iterator](): Returns a new Iterator object containing an array of [key, value] for each element in the status map, in insertion order.

Specification
Encrypted Media Extensions # dom-mediakeystatusmap

This page was last modified on Sep 28, 2026 by MDN contributors.