JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.

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 ...

Unlike many other languages, JavaScript does not distinguish between integers and floating-point numbers. 42 and 3.14 are both Number types. BigInt, as its name suggests, only covers integers, and ...