❎

Tag: Advanced JavaScript

🧪 JavaScript Test by Jest: Step-by-Step Guide

Guide on using JavaScript Test by Jest Framework, covering installation, writing tests, and mocking DOM elements.

Guide on using JavaScript Test by Jest Framework, covering installation, writing tests, and mocking DOM elements.

📝 Step 1: What is Jest? Jest is a JavaScript testing framework designed to make it easy to write and run tests. It was developed by Facebook and is used in major applications like React, Node.js, Twitter, Spotify, and Airbnb. It is one of the most popular testing frameworks today due to its speed, simplicity, and ease of setup. Jest allows you to test JavaScript code without requiring a browser, making it perfect for both front-end and back-end testing. ⁉️ How to Install Jest 🔰 To start using Jest in your project, follow these steps: Initialize your Node.js environment by running: npm init Install Jest by running: npm install –save-dev jest@26.6.3 After installation, verify that Jest is working by running: […]

Read More »

Avatar
Arash Javadi
4
27 Views
Post Date: 24/Feb/2025   ||   Written By: Arash Javadi

🚀 Advanced JavaScript Concepts

Advanced JavaScript concepts including ternary expressions, arrow functions, and browser integration.

Advanced JavaScript concepts including ternary expressions, arrow functions, and browser integration.

Ternary Expressions in JS Concepts❓ A ternary expression in JavaScript is a shorthand for an if…else statement. It evaluates a condition and returns one value if true and another if false. Syntax: condition ? expressionIfTrue : expressionIfFalse; Example: let age = 18; let status = (age >= 18) ? “Adult” : “Minor”; console.log(status); // Outputs: Adult Arrow Functions in JS Concepts 📝 Arrow functions provide a more concise way to write functions in JavaScript. They use the => syntax and have implicit returns for single expressions. Syntax: const functionName = (parameters) => { /* code */ }; Example: const add = (a, b) => a + b; console.log(add(3, 5)); // Outputs: 8 Arrow functions also have a different behavior for […]

Read More »

Avatar
Arash Javadi
4
47 Views
Post Date: 21/Feb/2025   ||   Written By: Arash Javadi

LOGIN 🔒