How to create a real-time chat room using JavaScript and WebSocket-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

How to create a real-time chat room using JavaScript and WebSocket

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Dec 17, 2023 pm 03:06 PM

javascriptwebsocketchatroom

How to create a real-time chat room using JavaScript and WebSocket

How to use JavaScript and WebSocket to create a real-time chat room

Introduction: With the continuous development of the Internet, real-time communication is becoming more and more important. Live chat apps have become a standard feature on many websites and apps. This article will introduce how to build a simple real-time chat room using JavaScript and WebSocket technology.

1. What is WebSocket
WebSocket is a protocol that provides two-way real-time communication between the client and the server. Compared with the traditional HTTP protocol, WebSocket has lower latency and higher real-time performance, and can establish a persistent connection between the client and the server. WebSocket can transmit data in real time without refreshing the page.

2. Implement the required tools and environment

A server with WebSocket support, such as Node.js, Java, etc.
Front-end development tools, such as VS Code.
A browser that supports WebSocket, such as Chrome, Firefox, etc.

3. Create the server side

Install Node.js and create a new project folder.
Open the command line in the project folder and initialize a new Node.js project. Run the following command:
```
 npm init
```
Install the WebSocket module. Run the following command:
```
 npm install websocket
```

Create a WebSocket server using the following code:

const WebSocket = require('websocket').server;
const http = require('http');

const server = http.createServer((request, response) => {});
server.listen(8080, () => {
 console.log('Server is listening on port 8080');
});

const wsServer = new WebSocket({
 httpServer: server
});

wsServer.on('request', (request) => {
 const connection = request.accept(null, request.origin);
 
 connection.on('message', (message) => {
     // 处理接收到的消息
     console.log('Received message: ', message.utf8Data);
     
     // 向客户端发送消息
     connection.sendUTF('Message received: ' + message.utf8Data);
 });
 
 connection.on('close', (reasonCode, description) => {
     // 处理连接关闭事件
     console.log('Connection closed');
 });
});

Save and start the server to make sure the server is running properly.

4. Create a client

Create a new HTML file in the project folder and name it index.html.

Insert the following code in index.html:

<!DOCTYPE html>
<html>
<head>
 <title>实时聊天室</title>
</head>
<body>
 <form id="chatForm">
     <input type="text" id="messageInput" placeholder="输入消息">
     <button type="submit">发送</button>
 </form>
 <div id="chatBox"></div>

 <script>
     const chatForm = document.getElementById('chatForm');
     const messageInput = document.getElementById('messageInput');
     const chatBox = document.getElementById('chatBox');

     const socket = new WebSocket('ws://localhost:8080');

     socket.onopen = () => {
         console.log('连接已建立');
     };

     socket.onmessage = (event) => {
         const message = event.data;
         console.log('Received message: ', message);

         // 显示接收到的消息
         const messageElement = document.createElement('div');
         messageElement.innerText = message;
         chatBox.appendChild(messageElement);
     };

     chatForm.addEventListener('submit', (event) => {
         event.preventDefault();

         const message = messageInput.value;
         console.log('Sending message: ', message);

         // 发送消息到服务器
         socket.send(message);

         // 清空输入框
         messageInput.value = '';
     });
 </script>
</body>
</html>

Save and open the index.html file with a browser to ensure that the client is running normally.

5. Test chat room

Open multiple tabs in the browser, and each tab acts as a user of the chat room.
Enter a message in the input box of any tab page and send it.
Observe the messages received by each tab page to ensure that the messages are synchronized in real time.

Through the above steps, you have successfully built a simple real-time chat room using JavaScript and WebSocket. You can expand and optimize according to actual needs, such as adding user authentication, creating rooms, sending pictures, etc.

Summary: This article explains how to create a real-time chat room using JavaScript and WebSocket. WebSocket can establish a persistent connection between the client and the server to achieve fast and real-time data transmission. I hope this article helps you in building real-time communication applications.

The above is the detailed content of How to create a real-time chat room using JavaScript and WebSocket. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

es6数组怎么去掉重复并且重新排序May 05, 2022 pm 07:08 PM

去掉重复并排序的方法：1、使用“Array.from(new Set(arr))”或者“[…new Set(arr)]”语句，去掉数组中的重复元素，返回去重后的新数组；2、利用sort()对去重数组进行排序，语法“去重数组.sort()”。

JavaScript的Symbol类型、隐藏属性及全局注册表详解Jun 02, 2022 am 11:50 AM

本篇文章给大家带来了关于JavaScript的相关知识，其中主要介绍了关于Symbol类型、隐藏属性及全局注册表的相关问题，包括了Symbol类型的描述、Symbol不会隐式转字符串等问题，下面一起来看一下，希望对大家有帮助。

原来利用纯CSS也能实现文字轮播与图片轮播！Jun 10, 2022 pm 01:00 PM

怎么制作文字轮播与图片轮播？大家第一想到的是不是利用js，其实利用纯CSS也能实现文字轮播与图片轮播，下面来看看实现方法，希望对大家有所帮助！

JavaScript对象的构造函数和new操作符（实例详解）May 10, 2022 pm 06:16 PM

本篇文章给大家带来了关于JavaScript的相关知识，其中主要介绍了关于对象的构造函数和new操作符，构造函数是所有对象的成员方法中，最早被调用的那个，下面一起来看一下吧，希望对大家有帮助。

JavaScript面向对象详细解析之属性描述符May 27, 2022 pm 05:29 PM

本篇文章给大家带来了关于JavaScript的相关知识，其中主要介绍了关于面向对象的相关问题，包括了属性描述符、数据描述符、存取描述符等等内容，下面一起来看一下，希望对大家有帮助。

javascript怎么移除元素点击事件Apr 11, 2022 pm 04:51 PM

方法：1、利用“点击元素对象.unbind("click");”方法，该方法可以移除被选元素的事件处理程序；2、利用“点击元素对象.off("click");”方法，该方法可以移除通过on()方法添加的事件处理程序。

整理总结JavaScript常见的BOM操作Jun 01, 2022 am 11:43 AM

本篇文章给大家带来了关于JavaScript的相关知识，其中主要介绍了关于BOM操作的相关问题，包括了window对象的常见事件、JavaScript执行机制等等相关内容，下面一起来看一下，希望对大家有帮助。

foreach是es6里的吗May 05, 2022 pm 05:59 PM

foreach不是es6的方法。foreach是es3中一个遍历数组的方法，可以调用数组的每个元素，并将元素传给回调函数进行处理，语法“array.forEach(function(当前元素,索引,数组){...})”；该方法不处理空数组。

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hello Kitty Island Adventure: How To Get Giant Seeds

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

How Long Does It Take To Beat Split Fiction?

4 weeks agoByDDD

R.E.P.O. Save File Location: Where Is It & How to Protect It?

4 weeks agoByDDD

Two Point Museum: All Exhibits And Where To Find Them

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Zend Studio 13.0.1

Powerful PHP integrated development environment

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),