Variables are made to receive values directly or through evaluated expressions compounding values and operators or results of function calls: the value is stored internally and the variable references ...

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 ...

With JavaScript array variables, we can store several pieces of data in one place. You start an array declaration with an opening square bracket, end it with a closing square bracket, and put a comma ...

Variables and arrays are used to store data to use within your code. A variable can store one piece of data whle an array can store multiple values. Inside a document.write() command, text in between ...

JavaScript supports array variables in addition to the basic scalar variables discussed in this article. We’ll focus on single-value variables and save arrays for another time.