Curious what's inside?

This course and others like it are available as part of our Frontend Masters video subscription.

Get Unlimited Access Now Watch a Free Lesson

Join Kyle Simpson — author of the popular “You Don’t Know JavaScript” book series — as he reveals the deep foundations of JavaScript. You’ll learn about object wrappers, coercion, scope, closure, types, prototype system, ES6 features, == vs === and more.

Understand deeply how the JavaScript engine looks for variables in function and block scope (var, let and const). Learn which ES6 features can help or hurt your coding and which new features should be used with caution. Also why coercion is one of the overlooked keys to using JavaScript more effectively. With this course, you’ll see how gaining a deeper understanding of JavaScript will make you a better communicator and programmer!

NOTE: The course material has been re-arranged. The first challenge on Coercion has been moved to the end of the course.

Kyle Simpson

Kyle Simpson is an Open Web Evangelist from Austin, TX, who's passionate about all things JavaScript. He's an author, workshop trainer, tech speaker, and OSS contributor/leader.

Kyle Simpson

You Don't Know JS

Table of Contents

Ready to take your code to the next level?

Intense courses with world-class teachers and unlimited access to our growing library of videos for the great price of $39 per month.

Get Unlimited Access Now