vue通过BroadcastChannel实现不同标签页直接传递消息

crossTagMsg.js

const channel = new BroadcastChannel('demo');

export function sendMsg(type, content){
    channel.postMessage({
        type,
        content,
    });
}

export function listenMsg(callback){
    const handler = (e) => {
        callback && callback(e.data);
    }
    channel.addEventListener('message', handler);
    return() => {
        channel.removeEventListener('message', handler);
    };
}

A.vue发送消息页面

import {listenMsg} from '@/utils/crossTagMsg'

function update(){
	sendMsg("更新", "dddd")
}

B.vue监听消息页面

import {listenMsg} from '@/utils/crossTagMsg'

//监听消息
const cancelListen = listenMsg((msgInfo) => {
  console.log('监听到了更新', msgInfo)
})
//组件销毁时移除监听
onBeforeUnmount(cancelListen);