MediaKeyStatusMap - Web APIs 编辑

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

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

Properties

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

MediaKeyStatusMap.entries() Read only: Returns a new Iterator object containing an array of [key, value] for each element in the status map, in insertion order.
MediaKeyStatusMap.forEach(callback[, argument]) Read only: 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() Read only: Returns the value associated with the given key, or undefined if there is none.
MediaKeyStatusMap.has() Read only: Returns a boolean asserting whether a value has been associated with the given key.
MediaKeyStatusMap.keys() Read only: Returns a new Iterator object containing keys for each element in the status map, in insertion order.
MediaKeyStatusMap.values() Read only: Returns a new Iterator object containing values for each element in the status map, in insertion order.
MediaKeyStatusMap.[@@iterator]() Read only: Returns a new Iterator object containing an array of [key, value] for each element in the status map, in insertion order.