What is the THIS keyword in JavaScript? How does it work and why is it so confusing?

The THIS keyword, from the series “10 Things JS Developers Should Know”
by ColorCode.io, Sina Jazayeri

Today, for episode 6, we’re talking about the THIS keyword, how context and execution logic changes the value of the ‘this’ keyword, and how arrow functions affect the value? Episode 6: The THIS keyword. Let’s go!