BroadcastChannel: messageerror event

Baseline 2022

Newly available

Since March 2022, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

当频道收到一条无法反序列化的消息时会在 BroadcastChannel 对象上触发 messageerror 事件。

Bubbles No
Cancelable No
Interface MessageEvent
Event handler property onmessageerror

示例

以下代码使用 addEventListener 来监听消息和错误：

js
const channel = new BroadcastChannel("example-channel");

channel.addEventListener("message", (event) => {
  received.textContent = event.data;
});

channel.addEventListener("messageerror", (event) => {
  console.error(event);
});

使用 onmessage 和 onmessageerror 事件处理程序来实现相同效果：

js
const channel = new BroadcastChannel("example-channel");

channel.onmessage = (event) => {
  received.textContent = event.data;
};

channel.onmessageerror = (event) => {
  console.log(event);
};

规范

Specification
HTML Standard
# event-messageerror
HTML Standard
# handler-broadcastchannel-onmessageerror

浏览器兼容性

BCD tables only load in the browser

参见