Node-fetch is a module that allows you to make HTTP requests from a Node.js environment. It provides a similar interface to the browser’s built-in fetch API but is specifically designed for server-side usage. Here’s an explanation of how node-fetch works: npm install node-fetch const fetch = require(‘node-fetch’); fetch(‘https://api.example.com/data’) .then(response => response.json()) .then(data => { console.log(data); … Read more
In a Node.js application, the app.use(express.json()) code is typically used as middleware with the Express framework. Let’s break down its functionality: const express = require(‘express’); const app = express(); app.use(express.json()); When a request is received by your Express application, the express.json() middleware is executed before reaching your routes or handlers. It examines the Content-Type header … Read more
In Node.js, the Buffer class is a built-in class that provides a way to work with binary data. It represents a fixed-size chunk of memory allocated outside the JavaScript heap. Buffers can be used to efficiently manipulate raw binary data, such as reading from or writing to files, interacting with network sockets, or handling binary … Read more
In Node.js, the package.json file is a metadata file that is typically located in the root directory of a Node.js project. It serves as a central configuration file for the project and provides important information about the project, its dependencies, and other details. The package.json file is essential for managing and building Node.js applications. It … Read more
In Node.js, “UTF” stands for Unicode Transformation Format. UTF is a character encoding scheme that represents Unicode characters using variable-length encoding. It allows representing a wide range of characters from different writing systems and languages. In the context of Node.js, “UTF” is commonly used in combination with string encoding and decoding operations. Node.js provides several … Read more
In Node.js, the fs module provides a set of functions for working with the file system. One of the functions available in this module is fs.stat(), which is used to retrieve information about a file or directory. The fs.stat() function takes a file path as its first parameter and a callback function as its second … Read more
To set up an HTTP server in Node.js, you can use the built-in http module. Here’s a code example that demonstrates how to create a basic HTTP server: const http = require(‘http’); // Define the port number for your server const port = 3000; // Create an HTTP server const server = http.createServer((req, res) => … Read more
Node.js code sample that demonstrates how to create files in a directory: const fs = require(‘fs’); const path = require(‘path’); // Specify the directory path where you want to create the files const directoryPath = ‘path/to/directory’; // Create an array of file names you want to create const fileNames = [‘file1.txt’, ‘file2.txt’, ‘file3.txt’]; // Loop … Read more
To install npm (Node Package Manager) along with Node.js, you can follow these steps: If the above steps were successful, you now have Node.js and npm installed on your system. You can start using npm to manage your Node.js packages and dependencies. Note: If you’re using a Linux or macOS system, you may need to … Read more
NodeJS Callback explained with Code Snippet Examples In Node.js, callbacks are a common pattern used to handle asynchronous operations. A callback is a function that is passed as an argument to another function and gets invoked once the asynchronous operation completes or encounters an error. Let’s dive into a detailed explanation with a coding example: … Read more
