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 ...

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.

Computer variables differ from mathematical variables in that they can store different values at different times. We tell JavaScript to create or declare a variable by putting the keyword var in front ...

The above tutorial mentioned this, but it's important enough to note again: let and const are both relatively new ways to declare variables in JavaScript. In many tutorials (and code) ... Do the first ...