JavaScript has evolved into one of the powerful web development language. Almost all web applications and other frameworks now depend on JavaScript to add interactivity and responsiveness, there is no doubt that it is gradually turning into a cutting edge technology for web developers. The good part is that JavaScript is really not that difficult to learn, all it takes is to get a good book that will guide you step by step from scratch. I learned the hard way and I have taken the corrective measure in this book not to lead my readers to toll in the same direction that learning JavaScript is difficult. The book is written to accommodate all categories of readers, beginners to advanced. Though, the book is targeted for beginners advanced user can also find some cutting edge practice in JavaScript.The book is arranged in a way that readers can easily flow from one chapter to another. I will strongly recommend that the reader should not skip any chapter as this will form the basis for the next chapter, though, advanced users can fast forward. I have also added the source codes for each of the examples treated in all the sections for illustrative purposes. All learning without application makes it difficult to gain mastery as a result I have added a project section to introduce the readers on how to use the knowledge derived from the book.