DeveloperBreeze

Read and Write Files in Node.js using 'fs' module

javascript
File Reading Node.js fs module File Writing 
// Import 'fs' module
const fs = require('fs');

// Read a file
fs.readFile('file.txt', 'utf8', (err, data) => {
  if (err) throw err;
  console.log(data);
});

// Write to a file
fs.writeFile('newfile.txt', 'Hello, Node.js!', (err) => {
  if (err) throw err;
  console.log('File written successfully.');
});

Related Posts

More content you might like

Tutorial

Build a Custom Rate Limiter in Node.js with Redis

Instead of IP address, use API keys for user-specific limits:

const userKey = req.headers['x-api-key'] || req.ip;
const key = `rate_limit:${userKey}`;

Apr 04, 2025
Read More
Tutorial
javascript css +1

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

Create a file named server.js in your project directory and add the following:

const express = require('express');
const http = require('http');
const socketIo = require('socket.io');

const app = express();
const server = http.createServer(app);
const io = socketIo(server);

app.use(express.static('public'));

io.on('connection', (socket) => {
    console.log('A user connected');

    socket.on('chatMessage', (msg) => {
        io.emit('chatMessage', msg);
    });

    socket.on('disconnect', () => {
        console.log('User disconnected');
    });
});

const PORT = process.env.PORT || 3000;
server.listen(PORT, () => console.log(`Server running on port ${PORT}`));

Aug 03, 2024
Read More
Code
php

JWT Token Creation and Verification in Node.js using 'jsonwebtoken'

No preview available for this content.

Jan 26, 2024
Read More
Code
javascript

Simple HTTP Server in Node.js

No preview available for this content.

Jan 26, 2024
Read More

Discussion 0

Please sign in to join the discussion.

No comments yet. Be the first to share your thoughts!