2024年06月12日 建站教程
WebSocket是单个TCP连接上的全双工通信协议，它允许服务器主动向客户端推送信息，而无需客户端轮询。下面web建站小编给大家简单介绍一下！
具体代码如下：
//前端代码
let socket = new WebSocket('ws://localhost:3000');
socket.onopen = function(event) {
socket.send('from client: Hello');
};
socket.onmessage = function(event) {
console.log(event.data);
};
socket.onerror = function(event) {
console.log('WebSocket error: ' + event.data);
};
//Node.js代码
let WebSocketServer = require('ws').Server;
let wss = new WebSocketServer({ port: 3000 });
wss.on('connection', function(ws) {
ws.on('message', function(message) {
console.log('Received from client: %s', message);
ws.send('from server: Hello');
});
ws.on('close', function() {
console.log('WebSocket closed!');
});
});
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