接口 MediaKeyStatusMap

This EncryptedMediaExtensions API interface is a read-only map of media key statuses by key IDs. Available only in secure contexts.

interface MediaKeyStatusMap {
    size: number;
    forEach(callbackfn: ((value: MediaKeyStatus, key: BufferSource, parent: MediaKeyStatusMap) => void), thisArg?: any): void;
    get(keyId: BufferSource): undefined | MediaKeyStatus;
    has(keyId: BufferSource): boolean;
}

索引

属性

方法

forEach get has

属性

`只读`size

size: number

方法

forEach

forEach(callbackfn, thisArg?): void
参数
- callbackfn: ((value: MediaKeyStatus, key: BufferSource, parent: MediaKeyStatusMap) => void)
  - - (value, key, parent): void
    - 参数
      value: MediaKeyStatus
      key: BufferSource
      parent: MediaKeyStatusMap
      返回 void
- 可选thisArg: any
返回 void

get

get(keyId): undefined | MediaKeyStatus
参数
- keyId: BufferSource
返回 undefined | MediaKeyStatus

has

has(keyId): boolean
参数
- keyId: BufferSource
返回 boolean