Inside this book.
This book brings together 101 questions that cover how JavaScript works as a language. The collection moves from core topics—types, operators, scope, closures, objects, arrays, and functions—to more advanced areas such as prototypes, classes, promises, async/await, and the event loop. Each question targets a specific concept and includes clear explanations with small code examples when they help illustrate the idea.
The final set of questions touches on how JavaScript fits into modern development, including working with APIs, handling text, simple scoring logic, and managing asynchronous flows often seen in AI-related workflows. Together, these questions provide a structured way to strengthen your understanding of JavaScript’s fundamentals and prepare more confidently for interviews.