JavaScript

30 JavaScript Coding Exercises

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This set of exercises continues your journey through JavaScript, covering more advanced concepts and practical problem-solving techniques. Keep practicing and experimenting! Section 4: Intermediate to Advanced Concepts (Exercises 31-40) Exercise 31: Error Handling with try…catch Exercise 32: Understanding this Keyword Context Exercise 33: Arrow Functions (=>) Exercise 34: Object Destructuring Exercise 35: Array Destructuring Exercise … Read more

30 JavaScript Coding Exercises for Beginners to Intermediate

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These exercises are designed to help you practice and solidify your understanding of fundamental to intermediate JavaScript concepts. Work through them step by step, and don’t hesitate to experiment with the code! Section 1: Fundamentals (Exercises 1-10) Exercise 1: Declare and Assign Variables Exercise 2: Basic Arithmetic Operations Exercise 3: String Concatenation Exercise 4: Conditional … Read more

How to Store (and Retrieve) a JavaScript Object in localStorage

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📋 What You’ll Learn 1. What Is localStorage? Method What it does setItem(key, value) Save a string under key getItem(key) Retrieve string for key (or null) removeItem(key) Delete entry for key clear() Wipe all keys in this origin 2. Why JSON.stringify / JSON.parse? Since localStorage only holds strings, to store an object you must: 3. … Read more

50 Advanced Vanilla JavaScript Questions with Detailed Explanations

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JavaScript is a versatile language with many nuances and advanced features. In this post, you’ll find 50 new questions covering topics from global objects and module loaders to service workers and job queues. Each entry includes a clear explanation and practical code examples. 1. What is the difference between the global object in a browser … Read more

50 More Advanced Vanilla JavaScript Questions with Detailed Explanations

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JavaScript is full of nuances, and even experienced developers can discover new insights by tackling challenging questions. The following 50 questions dive into topics ranging from Proxies and iterables to state management and performance optimizations—all using vanilla JavaScript. 1. How can you use a Proxy to intercept and log property accesses on an object? Answer: … Read more

25 Advanced Vanilla JavaScript Coding Questions

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JavaScript has evolved dramatically over the years. Beyond the basics lie powerful, nuanced topics that are essential for developing efficient, scalable, and robust applications. In this post, we explore 25 advanced JavaScript coding questions, each accompanied by an in-depth explanation and code examples to illustrate key concepts. 1. How Does the JavaScript Event Loop Handle … Read more

25 Essential JavaScript Coding Questions Answered

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JavaScript is one of the most popular programming languages today, powering everything from simple web page interactions to complex web applications. Whether you’re just starting out or have been coding for years, understanding key JavaScript concepts is essential. In this post, we’ll walk through 25 common JavaScript coding questions, complete with detailed explanations and examples … Read more

Understanding console.log(ele): Why It Shows HTML Instead of an Element Object

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When debugging JavaScript, you might have encountered a situation where logging an element with console.log(ele) displays the HTML content instead of the expected element object. This can be confusing, especially if you’re trying to inspect the element’s properties and methods. In this post, we’ll explore why this happens, how browsers handle console logging, and what … Read more

JavaScript Books Free

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1. JavaScript Fetch API for Complete Beginners 📅 Free Promotion: Tuesday, February 18, 2025 – Friday, February 21, 2025📌 US Link: https://www.amazon.com/dp/B0DT4X8ZMN📌 Canada Link: https://www.amazon.ca/dp/B0DT4X8ZMN Unlock the power of the Fetch API and learn how to send GET, POST, PUT, DELETE, and PATCH requests in JavaScript. Discover how to work with JSON, authentication, error handling, and real-world applications. 2. The JavaScript Study Guide: Comprehensive Insights Through 400 Real-World … Read more

How to Create an Interactive Accordion FAQ Section Using HTML, CSS, and JavaScript

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A Frequently Asked Questions (FAQ) section is an essential part of any website, helping users find answers quickly without needing to contact support. An accordion-style FAQ section enhances user experience by displaying only the relevant answers when clicked, keeping the interface clean and organized. In this blog post, we’ll build a simple Accordion FAQ Section … Read more