一个组件中：

import React, { useRef, useEffect } from 'react';

export default function Acompo() {
  const channelRef = useRef<BroadcastChannel | null>(null);

  useEffect(() => {
    if (!channelRef.current) {
      channelRef.current = new BroadcastChannel('proxy-channel');
      channelRef.current.onmessage = event => {
        console.log('Received message:', event.data);
      };
    }
    return () => {
      channelRef.current?.close();
    };
  }, []);

  return (
    <div>
      <button>Send Message134</button>
    </div>
  );
}

另一个组件中：

 const sendMessage = () => {
   const channel = new BroadcastChannel('proxy-channel');
   channel.postMessage('Hello from this tab!');
 };