Simplified JavaScript: How do I use var, let, and const?

Too Long; Didn't Read

<em>Before reading this post, consider reading my earlier posts on </em><a href="https://hackernoon.com/simplified-javascript-hoisting-9128b74bb397" target="_blank"><em>hoisting</em></a><em> and </em><a href="https://code.likeagirl.io/simplified-javascript-getting-started-with-closures-f40f65317d00" target="_blank"><em>closures</em></a><em>. They might give you some background information you’ll need to understand this post.</em>