时间:2022-11-17 10:15:14 | 栏目:NodeJS | 点击:次
该页面主要是渲染聊天界面
<!DOCTYPE html> <html> <head> <title>Socket.IO chat</title> <style> body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; } #form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); } #input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; } #input:focus { outline: none; } #form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; } #messages { list-style-type: none; margin: 0; padding: 0; } #messages > li { padding: 0.5rem 1rem; } #messages > li:nth-child(odd) { background: #efefef; } .message{font-size: 40px;color: skyblue} .name{font-size: 15px;color: pink} </style> </head> <body> <ul id="messages"></ul> <form id="form" action=""> <input id="input" autocomplete="off" name="main" /><button>Send</button> </form> <script src="/socket.io/socket.io.js"></script> <script> let name=prompt("输入用户名"); //拿到用户名后进行非空验证 if(name == '' || name == null){ alert("先输入用户名") }else { //初始化socket模块 var socket = io(); socket.emit('name message',name);//向服务器发送消息(用户名信息) let form = document.getElementById('form'); let inputMain = document.querySelector('input[name="main"]'); form.addEventListener('submit', function(e) { e.preventDefault();//取消默认提交事件 if (inputMain.value) {//如果文本框中有消息 socket.emit('chat message', inputMain.value);//向服务器发送消息(聊天信息) inputMain.value = ''; } }); //渲染服务器端发送的用户名信息(不仅是自己的,还有别的用户的) socket.on('name message',function (msg){ var item = document.createElement('li'); item.classList.add("name") item.textContent = msg; messages.appendChild(item); }) //渲染服务器端发送的聊天信息(不仅是自己的,还有别的用户的) socket.on('chat message', function(msg) { var item = document.createElement('li'); item.classList.add("message") item.textContent = msg; messages.appendChild(item); window.scrollTo(0, document.body.scrollHeight); }); } </script> </body> </html>
该文件主要用于聊天信息后端处理
const express = require('express'); const app = express(); const http = require('http'); const server = http.createServer(app); //引入socket.io const {Server}=require('socket.io') const io=new Server(server) app.get('/', (req, res) => { res.sendFile(__dirname + '/index.html'); }); io.on('connection',(socket)=>{ let name; socket.on('name message', (msg) => { name=msg; io.emit('name message', name+"已上线"); socket.on("disconnect", (reason) => { io.emit('name message', name+"已断开"); }); }); socket.on('chat message', (msg) => { io.emit('name message', name); io.emit('chat message', msg); }); }) server.listen(3000, () => { console.log('listening on *:3000'); });