Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table of the ...

Variables hold a wide variety of information temporarily. The JavaScript data types that can be stored in a variable include: JavaScript variables can hold a few other kinds of data, but these are by ...

If you’re a developer, you’ve probably heard a little bit about ECMAScript 6 (ES6) already, though at first glance it might seem a little confusing. What it really boils down to is this: it’s the next ...

Every developer eventually has a moment when JavaScript objects “click.” These structures hold data, define behavior, and connect everything from variables to complex web apps. Learning how objects ...

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful! Last week, I casually dropped the term “higher-order function” ...