πŸ§ͺ JavaScript Test by Jest: Step-by-Step Guide

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

πŸ“ 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 πŸ”° 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: […]

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πŸ”§ JavaScript Functions List: A Complete Guide

A detailed illustration of JavaScript functions list, including defining, calling, and returning results.

Introduction to Functions βš™οΈ In JavaScript, functions are blocks of code designed to perform a specific task. Functions allow you to write reusable code, making your programming more efficient and organized. Understanding how to define and call functions is a fundamental skill for any JavaScript developer. Defining and Calling Functions in JavaScript πŸ“ A function in JavaScript is defined using the function keyword, followed by the function name, parameters (if any), and the code to execute. You can call a function by simply using its name and passing any necessary arguments. Example of defining and calling a function: function greet(name) { console.log(“Hello, ” + name + “!”); }greet(“Alice”); // Outputs: Hello, Alice! greet(“Bob”); // Outputs: Hello, Bob! Functions: Taking Parameters […]

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