nodejs代碼 // 導入WebSocket模塊: const WebSocket = require('ws'); // 引用Server類: const WebSocketServer = WebSocket.Server; // 實例化: const wss = new WebSocketS ...
nodejs代碼
// 導入WebSocket模塊: const WebSocket = require('ws');// 引用Server類: const WebSocketServer = WebSocket.Server;
// 實例化: const wss = new WebSocketServer({ port: 3001 }); wss.on('connection', function (ws) { console.log(`ws 已經連接上`); ws.on('message', function (message) {
console.log(`收到客戶端的數據: ${message}`); ws.send(`服務端接收到數據，給客戶端返回數據: ${message}`, (err) => { if (err) { console.log(`[SERVER] error: ${err}`); } }); }) }); 2. html代碼 // 打開一個WebSocket: var ws = new WebSocket('ws://localhost:3001'); // 響應onmessage事件: ws.onmessage = function (msg) { console.log(msg); }; // 給伺服器發送一個字元串: ws.addEventListener('open', function () { let msg = '我是客戶端： ' + location.href ws.send(msg) }); 3. 當然 必須提前導入ws模塊 npm i ws
