BroadcastChannel()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.

备注： 此特性在 Web Worker 中可用。

BroadcastChannel() 构造函数用于创建一个 BroadcastChannel 对象，并与底层的通道相关联。

语法

new BroadcastChannel(channelName)

// 创建一个监听“internal_notification”通道的新通道。

const bc = new BroadcastChannel("internal_notification");
bc.postMessage("新的监听连接！");

Specification
HTML # dom-broadcastchannel-dev