An an array is a list of ordered, stored data. They can hold items that are of any data type.


Arrays are often created by using square brackets, with individual elements separated by commas.

array = [element1, element2, element3, element4]

Index Number

We access an array element by referring to the index number. An index is the element’s position in a sequence.

A lot of times, array indices start with 0:

grocery = ["milk", "cookies", "berries", "carrots"]
// index: 0 1 2 3
  • The first element is at index 0.
  • The second element is at index 1.
  • The third element is at index 2.
  • …and so on.

Arrays in Different Languages

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