πŸ‘©πŸ»β€πŸ’» DOM Manipulation in jQuery

Learn DOM manipulation in jQuery! Understand how to modify elements and create dynamic content easily with jQuery.

πŸ—£οΈ Introduction to DOM Manipulation in jQuery In web development, DOM manipulation is the process of changing the document structure, style, or content of a webpage. jQuery is a powerful JavaScript library that simplifies this process, making it faster and more intuitive than working with raw JavaScript alone. jQuery provides an easy-to-use API to interact with the DOM, which allows you to manipulate HTML elements, handle events, and create dynamic, interactive web pages. This tutorial will show you how to manipulate the DOM using jQuery, making it a breeze to work with HTML elements, styles, and user interactions. πŸ’‘Β Understanding the DOM and jQuery ⁉️ What is the DOM? The Document Object Model (DOM) is a tree-like structure that represents the HTML […]

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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”¬ Software Testing Tutorial

Software Testing Tutorial with the models of TDD, BDD, and Red-Green-Refactor cycle with examples.

πŸ§‘β€πŸ’» Testing Paradigms of Software Tests: TDD vs BDD There are different ways to build and test code, with some of the most common paradigms being Behavior-Driven Development (BDD) and Test-Driven Development (TDD). These approaches are widely used in software development and are often mentioned in job advertisements. In this tutorial, we’ll focus on the TDD approach, but we’ll also touch on BDD, as these paradigms are often used together. 🧩 Behavior-Driven Development (BDD) Behavior-Driven Development (BDD) is based on testing the expected outcome of an action. It’s a manual testing approach where we test the application by interacting with it and verifying if it behaves as expected. BDD extends the concept of user stories by adding Given, When, and […]

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πŸ€– Maintaining and Installing Node.js on Windows Machine

A step-by-step guide on installing Node.js on Windows with Volta.

🎯 Introduction JavaScript is a powerful language, often run in the browser to manipulate the DOM and add interactivity. However, when working with advanced JavaScript frameworks like React or tools like Jest for automated testing, it’s necessary to run JavaScript outside of the browser. This is where Node.js comes in. Node.js is an open-source JavaScript runtime that allows you to run JavaScript code in your development environment, independent of a browser. To take advantage of Node.js in your local environment and manage different versions of it (as required by various frameworks), you need to install Node.js and use a tool to manage multiple versions. In this post, we’ll walk through the process of installing and maintaining Node.js on your Windows […]

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πŸ“ JavaScript Form Validation and Data Handling

JavaScript form validation! Learn how to get, prepopulate, and validate form data.

πŸ“ Getting Form Data One of the most basic tasks when working with forms in JavaScript is retrieving the data entered by the user. You can easily access form data by selecting the form elements and using the value property. Example: <form id=”myForm”> <input type=”text” id=”name” name=”name” placeholder=”Enter your name”> <input type=”email” id=”email” name=”email” placeholder=”Enter your email”> <button type=”submit”>Submit</button> </form> <script> const form = document.getElementById(‘myForm’); form.addEventListener(‘submit’, function(event) { event.preventDefault(); // Prevent form submission to keep it on the page let name = document.getElementById(‘name’).value; let email = document.getElementById(’email’).value; console.log(‘Name:’, name, ‘Email:’, email); }); </script> In this example, when the form is submitted, JavaScript retrieves the values from the name and email input fields and logs them to the console. πŸ”„ Prepopulating […]

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