contextParams.context

• 类型：<ArrayBuffer> | <TypedArray> | <DataView> | <Buffer> | <undefined>

  ¥Type: <ArrayBuffer> | <TypedArray> | <DataView> | <Buffer> | <undefined>

context 成员表示与消息关联的可选上下文数据。

¥The context member represents the optional context data to associate with the message.