Level up from JavaScript fundamentals to building production-ready web applications with ES6+, React, and Node.js. JavaScript Mastery: From Basics to Advanced Web Apps with ES6+, React, and Node.js by Km Khushaboo is a practical, step-by-step guide designed for developers who want to write cleaner code, master modern JavaScript features, and confidently ship full-stack experiences. You’ll start by strengthening core JavaScript concepts—variables, scope, functions, asynchronous programming, and the patterns that make code more reliable. Then, you’ll move into advanced ES6+ capabilities such as modules, destructuring, spread/rest operators, arrow functions, promises, and async/await. Next, the book walks you through building real UIs with React, including component design, state management, hooks, props, and best practices for scalable front ends. Finally, you’ll extend your skills on the server with Node.js, learning how to structure backend logic, handle requests and responses, work with APIs, and apply fundamentals of building complete web apps. Throughout, you’ll find guidance that helps you understand not just what to code, but why it works—so you can troubleshoot effectively and improve performance. Whether you’re preparing for interviews, transitioning from beginner to professional development, or expanding your toolkit for modern web engineering, this book is your roadmap to JavaScript mastery.