With this book you will: Learn the essential programming building blocks, including operators, types, variables, conditionals, loops, and functions Become familiar with JavaScript's core mechanisms such as values, function closures, this, and prototypes Get an overview of other books in the series-and learn why it’s important to understand all parts of JavaScript By learning the basic building blocks of programming, as well as JavaScript’s core mechanisms, you’ll be prepared to dive into the other, more in-depth books in the series-and be well on your way toward true JavaScript. The series’ first book, Up & Going, provides the necessary background for those of you with limited programming experience. With the 'You Don’t Know JS' book series, you’ll get a more complete understanding of JavaScript, including trickier parts of the language that many experienced JavaScript programmers simply avoid. It’s easy to learn parts of JavaScript, but much harder to learn it completely-or even sufficiently-whether you’re new to the language or have used it for years. Learn about scope, a set of rules to help JavaScript engines locate variables in your code Go deeper into nested scope, a series of containers for variables and functions Explore function- and block-based scope, “hoisting”, and the patterns and benefits of scope-based hiding Discover how to use closures for synchronous and asynchronous tasks, including the creation of JavaScript libraries Armed with this knowledge, you can achieve true JavaScript mastery. Like other books in the 'You Don’t Know JS' series, Scope and Closures dives into trickier parts of the language that many JavaScript programmers simply avoid. You’ll learn how and why they work, and how an understanding of closures can be a powerful part of your development skillset. This concise yet in-depth guide takes you inside scope and closures, two core concepts you need to know to become a more efficient and effective JavaScript programmer. No matter how much experience you have with JavaScript, odds are you don’t fully understand the language.

You dont know js full pdf