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Building a Real-Time Chat Application with WebSockets in Node.js

Tutorial August 03, 2024
javascript css html 

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.chat-container {
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 300px;
}

#messages {
    list-style-type: none;
    padding: 0;
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 10px;
}

#messages li {
    padding: 8px;
    background-color: #f1f1f1;
    border-radius: 3px;
    margin-bottom: 5px;
}

#chat-form {
    display: flex;
}

#message {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    margin-right: 5px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 3px;
    padding: 8px 12px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}
const socket = io();

const messageForm = document.getElementById('chat-form');
const messageInput = document.getElementById('message');
const messagesList = document.getElementById('messages');

messageForm.addEventListener('submit', (e) => {
    e.preventDefault();
    const message = messageInput.value;
    socket.emit('chatMessage', message);
    messageInput.value = '';
});

socket.on('chatMessage', (message) => {
    const li = document.createElement('li');
    li.textContent = message;
    messagesList.appendChild(li);
});

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