聊天室三種寫法

const net = require( 'net' ) //引入net模組

const socket = net.socket() //建立客戶端
const host = 'localhost'
const port = 5000 
const readline = require( 'readline') // 讀取命令列
// 客戶端連線伺服器 
socket.connect( port,host, () => )
const rl = readline.createinte***ce();
socket.on('data', msg => )
socket.on( 'error', ( error ) => )
socket.on( 'close', () => )
function say () else
});}

const net = require( 'net' ) //引入net模組

const server = net.createserver() // 建立伺服器
const host = 'localhost' // 建立 網域名稱 
const port = 5000 // 建立埠
let count = 0 
const clients = {} 
server.on('connection', ( client ) => 說：$` )
boardcaster( client,msg )
})client.on( 'error', error => )
client.on( 'close', () => 下線了` )
})})function boardcaster ( client,msg ) 說：$` ) // 寫資訊在服務端
}}// 監聽伺服器
提交js
socket.io.js
只適用於老的瀏覽器，現在已經不推薦使用了

伺服器

const websocket = require( 'ws' ) // 引入ws模組
// 建立伺服器
// const ws = new websocket( options ) options就是乙個物件
const ws = new websocket.server() 
let count = 0
const clients = {}
ws.on('connection', client => 說：$` )
boardcaster( client,msg )
})client.on('close', () => 下線了` )
})})function boardcaster ( client,msg ) 說： $` )
}}靜態伺服器
const express = require( 'express' )
const path = require( 'path' )
// 理解： 為了呼叫中介軟體（ 函式 ）
const port = 8000 
const host = '10.31.158.25'
// console.log( __dirname ) // 當前檔案所在的磁碟路徑
console.log( `伺服器執行在: http://$:$` )
})連線通訊伺服器 js
const url = 'ws:'
const ws = new websocket( url )
ws.onopen = () => 
ws.onmessage = msg => 
http部分
var submit = document.queryselector('#submit')
var msg = document.queryselector('#msg')
// submit.onclick = function () 
document.onkeyup = function ( e ) 
}

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