Skip to Content
You Don't Know JS: Up & Going
book

You Don't Know JS: Up & Going

by Kyle Simpson
March 2015
Beginner
85 pages
1h 42m
English
O'Reilly Media, Inc.
Content preview from You Don't Know JS: Up & Going

Chapter 3. Into YDKJS

What is this series all about? Put simply, it’s about taking seriously the task of learning all parts of JavaScript, not just some subset of the language that someone called “the good parts,” and not just whatever minimal amount you need to get your job done at work.

Serious developers in other languages expect to put in the effort to learn most or all of the language(s) they primarily write in, but JS developers seem to stand out from the crowd in the sense of typically not learning very much of the language. This is not a good thing, and it’s not something we should continue to allow to be the norm.

The You Don’t Know JS (YDKJS) series stands in stark contrast to the typical approaches to learning JS, and is unlike almost any other JS books you will read. It challenges you to go beyond your comfort zone and to ask the deeper “why” questions for every single behavior you encounter. Are you up for that challenge?

I’m going to use this final chapter to briefly summarize what to expect from the rest of the books in the series, and how to most effectively go about building a foundation of JS learning on top of YDKJS.

Scope & Closures

Perhaps one of the most fundamental things you’ll need to quickly come to terms with is how scoping of variables really works in JavaScript. It’s not enough to have anecdotal fuzzy beliefs about scope.

The Scope & Closures title starts by debunking the common misconception that JS is an “interpreted language” and therefore not ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

You Don't Know JS: ES6 & Beyond

You Don't Know JS: ES6 & Beyond

Kyle Simpson

Publisher Resources

ISBN: 9781491924471Errata Page