This book is dedicated to helping JavaScript Full Stack Developers interview for new positions, capture the job offer of their dreams and move up the career ladder. It is primarily geared toward "Full Stack front-end" developers. Along with answering technical JavaScript questions, the book also covers other front-end languages such as Angular, Express, MongoDB, Node.js, and more." JavaScript is one of the most demanded languages worldwide, so it isn't surprising that many tech specialists worldwide are equipping themselves with it. And this has opened the door for them to grow professionally. Not surprisingly, the high demand for JavaScript developers means they're among the highest-paid coders. As a result, JavaScript has become more attractive to people interested in IT languages. But more details about the salaries will be provided later in this series. JavaScript developers have excellent market potential. And this can be analyzed through the labor market's lens of supply and demand. According to a comprehensive survey conducted by Developer Nation, the world's premier IT research program, JavaScript emerges as the most sought-after programming language with an impressive margin of superiority. In Q3 of 2021, JavaScript was reported to have had around 16.5 million people using it annually. And more than 2.5 million people joined the JavaScript community within 6 months before the report. JavaScript, therefore, has a soaring popularity. Plus, it is relatively easier to learn, so entry-level developers are often keener on starting with JavaScript. As a result, around 5 million engineers entered the market with JavaScript between 2020 and 2021, which is a 145% rise. This further highlights the promising growth associated with JavaScript as a market. Therefore, whether you are new to JavaScript script or are already a developer considering pursuing a career in JavaScript in the long term, this book will expose you to every opportunity available for you as a JavaScript developer. You will also benefit from the simplified tips on how to land your next job as a JavaScript programmer. But, more importantly, the thoroughly laid out guidelines here will help you make smarter IT career decisions and go beyond just hoping to achieve your dreams of a successful career as a developer.