The Channel Messaging API is a great way to send 1-to-1 messages from a window to an iframe, from a window to a Web Worker, and so on.

Channel Messaging API是一种从窗口向iframe，从窗口向Web Worker等发送一对一消息的好方法。

The BroadcastChannel API can be used to send 1-to-many messages, communicating to multiple entities at the same time.

BroadcastChannel API可用于发送一对多消息，同时与多个实体进行通信。

You start by initializing a BroadcastChannel object:

首先初始化一个BroadcastChannel对象：

const channel = new BroadcastChannel ( 'thechannel' )

To send a message on the channel you use the postMessage() method:

要在频道上发送消息，请使用postMessage()方法：

channel . postMessage ( 'Hey!' )

A message can be any of those supported values:

消息可以是以下任何受支持的值：

• All primitive types, excluding symbols
  所有原始类型，不包括符号
• Object literals
  对象文字

• , , objects

  ， ， 对象

• , , objects

  ， ， 对象

• , objects

  ， 对象

• objects

  对象

• ImageData objects
  ImageData对象

• and objects

  和对象

To receive messages from the channel, listen to the message event:

要从频道接收消息，请收听message事件：

channel . onmessage = event => {  console . log ( 'Received' , event . data )}

This event is fired for all listeners, except the one that is sending the message.

除发送消息的侦听器之外的所有侦听器均触发此事件。

You can close the channel using:

您可以使用以下方法关闭频道：

channel . close ()

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