A small example of WebSocket implemented in html5 (with code)-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

A small example of WebSocket implemented in html5 (with code)

不言

Aug 16, 2018 pm 02:33 PM

This article brings you a small example (with code) of WebSocket implemented in html5. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Client code:

<html>
<head>
<script>
var socket;
if ("WebSocket" in window) {
var ws = new WebSocket("ws://127.0.0.1:8181");
socket = ws;
ws.onopen = function() {
console.log(&#39;连接成功&#39;);
};
ws.onmessage = function(evt) {
var received_msg = evt.data;    
document.getElementById("showMes").value+=evt.data+"\n";
};
ws.onclose = function() {
alert("断开了连接");
};
} else {
alert("浏览器不支持WebSocket");
}
function sendMes(){
var message=document.getElementById("name").value+":"+document.getElementById("mes").value;
socket.send(message);
}
</script>
</head>

<body>
<textarea rows="3" cols="30" id="showMes" style="width:300px;height:500px;"></textarea>
<br/>
<label>名称</label>
<input type="text" id="name"/>
<br/>
<label>消息</label>
<input type="text" id="mes"/>
<button onclick="sendMes();">发送</button>
</body>
</html>

winform server code:

Note: Fleck package needs to be introduced first

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using Fleck;

namespace socketService
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
CheckForIllegalCrossThreadCalls = false;
}

private void Form1_Load(object sender, EventArgs e)
{
//保存所有连接
var allSockets = new List<IWebSocketConnection>();
//初始化服务端
var server = new WebSocketServer("ws://0.0.0.0:8181");
//开始监听
server.Start(socket =>
{
//有客户端连接触发
socket.OnOpen = () =>
{
textBox3.Text += socket.ConnectionInfo.ClientIpAddress + " 连接 \r\n";
allSockets.Add(socket);
};
//有客户端断开触发
socket.OnClose = () =>
{
textBox3.Text += socket.ConnectionInfo.ClientIpAddress + " 断开连接 \r\n";
allSockets.Remove(socket);
};
//接收客户端发送的消息
socket.OnMessage = message =>
{
textBox3.Text += socket.ConnectionInfo.ClientIpAddress + " 发送了消息：" + message + "\r\n";
//发送接收到的消息给所有客户端
allSockets.ToList().ForEach(s => s.Send(message));
};
});
}
}
}

Related recommendations:

php html5 method of implementing chat rooms based on websocket, html5websocket

Use html5 Websocket implementation of websocket chat room_html5 tutorial skills

The above is the detailed content of A small example of WebSocket implemented in html5 (with code). 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

C and JavaScript: The Connection ExplainedApr 23, 2025 am 12:07 AM

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

From Websites to Apps: The Diverse Applications of JavaScriptApr 22, 2025 am 12:02 AM

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python vs. JavaScript: Use Cases and Applications ComparedApr 21, 2025 am 12:01 AM

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

The Role of C/C in JavaScript Interpreters and CompilersApr 20, 2025 am 12:01 AM

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript in Action: Real-World Examples and ProjectsApr 19, 2025 am 12:13 AM

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

JavaScript and the Web: Core Functionality and Use CasesApr 18, 2025 am 12:19 AM

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding the JavaScript Engine: Implementation DetailsApr 17, 2025 am 12:05 AM

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python vs. JavaScript: The Learning Curve and Ease of UseApr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

See all articles