A Subpage of Confusion: What is this, this, and that in JavaScript?

JavaScript: a language so confusing, it's like trying to understand a toddler's explanation of quantum physics.

• JavaScript for Solitude: A guide for the socially awkward developer
• JavaScript and the Meaning of Life: Or how to write a to-do list that actually makes sense
• JavaScript in the Dark: A journey into the unknown... and the abyss

Other things, too:

• What is this in JavaScript?
• What is that in JavaScript?
• What is the thing in JavaScript?