Abstract

Scope is one of the most critical concepts in JavaScript, but even seasoned front-end developers have trouble with the the meaning of `this`. It doesn’t have to be this way. Once you learn the few simple rules that govern JavaScript scope, your code will become more precise and flexible.

Let’s take a deep dive into what scoping means in JavaScript. In this talk you’ll learn why scope is critical to applications running in a browser environment, what the heck all this talk of `this` and `_that` is about, as well as how to avoid some pitfalls even the experts make.