Arrays

Arrays store a collection of data, ordered according to their index. The index is also called the index of the array. It starts at 0 and scales up to the total number of elements in the array, minus 1 (0 to n-1).

Let’s learn how to create an array first.

Creating an array

An array corresponds in JavaScript to an Array class object. We therefore create an array using the new Array instruction.

However, since arrays are widely used in JavaScript programs, it is also possible to create them using a bracket notation [ and ]. This is an easier way to use them without going through the Array class.

Let’s take a detailed look at these two ways to create an array (with brackets and with the Array class).

Creating an array using square brackets [ and ]

The easiest and fastest way to create an array is to use the bracket notation:

Creating an array using square brackets

var tab = ["Element 1", "Element 2", "Element 3"...