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 ...

As a language, JavaScript receives more than its fair share of criticism. Its default global variables, prototypical inheritance, and dynamic typing are often considered flaws that can lead to sloppy ...

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 ...

Overview: Strong fundamentals in data types, scope and closures boost interview performance.Understanding promises and event ...