You Don’t Know JS Yet: Get Started
Welcome to the first book in the You Don’t Know JS Yet series! This book is your foundation for the journey ahead.Even if you’ve already written a lot of JavaScript, this book should not be skipped. Take your time to fully process the material here. A good start always depends on a solid first step.
About This Book
I emphasize the word journey because knowing JS is not a destination, it’s a direction. No matter how much time you spend with the language, you will always be able to find something else to learn and understand a little better. So don’t look at this book as something to rush through for a quick achievement. Instead, patience and persistence are best as you take these first few steps.What You’ll Learn
This book lays out a high-level map of what you will find as you dig into and study JS with the YDKJSY books. In particular, you’ll explore:Language Foundation
Understand what JavaScript really is, its history, and how it’s organized and maintained by TC39.
Core Syntax
Survey the major topic areas of JS syntax, patterns, and behaviors to get a better feel for the language.
Deep Roots
Dig into the lower-level root characteristics of JS including iteration, closure,
this, and prototypes.The Three Pillars
All of JavaScript is founded on three foundational pillars:Getting Started
Ready to begin? Start with the Foreword, then dive into the chapters:Foreword
Brian Holt’s perspective on why this series matters
Chapter 1: What Is JavaScript?
Build a foundation for understanding JS’s identity and process
Chapter 2: Surveying JS
Survey the major syntax and features of the language
Chapter 3: Digging to the Roots
Explore iteration, closure,
this, and prototypesChapter 4: The Bigger Picture
See how the three pillars organize the entire language
Appendix A: Exploring Further
Dig deeper into values, functions, and prototypes
Appendix B: Practice!
Practice exercises to solidify your understanding