Cracking JavaScript Interview: The Most Popular Questions And Answers

About the author
Part I: Core JavaScript Foundations
Chapter 1: Language Basics & Data Types
Chapter 2: Functions & Execution Context
Chapter 3: Objects & Prototypes
Chapter 4: Arrays & Built-in Data Structures
Part II: Advanced Language Features
Chapter 5: this, Binding & Advanced Function Techniques
Chapter 6: Symbols, Reflect & Proxies
Chapter 7: Generators & Iterators
Chapter 8: Asynchronous JavaScript & The Event Loop
Chapter 9: Error Handling & Debugging
Chapter 10: Advanced Memory & Performance Optimization
Chapter 11: Functional & Object-Oriented Paradigms
Chapter 12: Metaprogramming & Introspection
Part III: Security, Testing & Quality
Chapter 13: Security & Safe Coding Practices
Chapter 14: Testing & Code Quality
Part IV: Behavioral & Communication Aspects
Chapter 15: Behavioral & Thought Process Communication
Further Reading and References

This book seeks to demystify JavaScript and guide you through the foundations, deep dives, and advanced concepts that are critical in today’s job market. While many resources cover frameworks and libraries, we’ve chosen a language-centric approach. By prioritizing core and advanced JavaScript topics, we aim to give you a thorough understanding of the language that forms the backbone of countless applications.
Our goal is not just to teach you JavaScript concepts, but to prepare you for real-world interviews and coding challenges. Each chapter concludes with practical questions and coding puzzles so you can apply what you’ve learned and think on your feet vital skills for interviews that require both analytical problem-solving and clear communication of your thought process.
We have also included a dedicated section on behavioral and communication skills. Mastering JavaScript alone isn’t enough; conveying solutions, working through ambiguity, and collaborating effectively are equally important. By blending technical depth with soft skill preparation, this book ensures you’re ready to excel in interviews and stand out in competitive hiring environments.
Whether you are a junior developer exploring JavaScript for the first time or a senior engineer looking to refine your expertise, we hope this book will serve as a valuable resource on your journey. Thank you for choosing to deepen your JavaScript knowledge with us. We invite you to dive in, practice the exercises, and embrace the nuances of this ever-evolving language. Your next JavaScript interview—and the exciting projects that lie beyond await.