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.

Now that you understand what variables are and how they work, we can try using them in some actual JavaScript code. Creating Variables and Using the JavaScript Alert() Function.

In JavaScript, variables are used to store data values that can be used and manipulated throughout a program. There are several different data types in JavaScript, including strings, numbers, booleans ...