About this ebook
Starting with the basics of JavaScript syntax, variables, data types, operators, control statements, loops, functions, arrays, and objects, the book gradually introduces advanced topics such as ES6+ features, asynchronous programming, promises, async/await, closures, prototypes, classes, modules, DOM manipulation, event handling, error handling, JSON, AJAX, Fetch API, and browser storage.
A key feature of this book is its extensive collection of interview questions and detailed answers. It includes frequently asked JavaScript interview questions ranging from beginner to advanced levels, helping readers understand both theoretical concepts and practical coding challenges. Each answer is explained clearly to strengthen conceptual knowledge and improve problem-solving skills.
The book also contains coding exercises, best practices, debugging techniques, and tips for writing clean, maintainable, and efficient JavaScript code. Readers will gain the confidence to build interactive web applications and succeed in technical interviews for front-end, full-stack, and web development roles.
Whether you are learning JavaScript for the first time, refreshing your programming knowledge, or preparing for interviews at startups and leading technology companies, this book serves as a complete learning and interview preparation resource.
What You'll Learn
JavaScript Fundamentals
Variables, Data Types, and Operators
Conditional Statements and Loops
Functions and Scope
Arrays and Objects
Strings, Numbers, and Dates
ES6+ Features (let, const, arrow functions, template literals)
Destructuring and Spread Operator
Classes and Object-Oriented Programming
Closures, Hoisting, and Prototypes
DOM Manipulation and Events
Form Validation
Error Handling and Debugging
JSON and AJAX
Fetch API and Asynchronous Programming
Promises and Async/Await
Browser Storage (Local Storage & Session Storage)
Modules and Modern JavaScript
Coding Best Practices
Real-World JavaScript Examples
300+ JavaScript Interview Questions and Answers
Coding Challenges and Solutions
Tips for Technical Interviews
Discover more
About the author
Arvind Choudhary is an experienced Software Developer, Corporate Trainer, and Technology Mentor from India with around 12 years of professional experience in the IT industry. He has worked extensively for 8 years as a developer and 4 years as a corporate trainer, helping students, professionals, and organizations build strong technical skills in modern software technologies.
He specializes in Java Full Stack Development, Python Full Stack Development, MERN Stack, Flutter, Android Development, Artificial Intelligence (AI), Machine Learning (ML), Generative AI, Agentic AI, AI Agents, and Android Firmware Development.
Throughout his career, Arvind Choudhary has trained and mentored numerous students and working professionals through live projects, practical implementation, industry-focused training, and real-world application development. His teaching approach focuses on simplifying complex technical concepts into easy-to-understand practical learning experiences.
As an author and trainer, he is passionate about sharing knowledge in emerging technologies including Generative AI, AI Automation, Prompt Engineering, Large Language Models (LLMs), and modern software engineering practices. His goal is to help learners become industry-ready developers and technology innovators.
Arvind Choudhary continues to contribute to the technology community through technical training, content creation, software development, and educational initiatives focused on next-generation technologies.
