Variables can store numbers or strings. But so far, we've only been able to store ONE number or ONE string. Good thing we have arrays. Arrays:

a. store lists of data
b. can store different data types at the same time
c. are ordered so the position of each piece of data is fixed

Example:

var names = ["Mao","Gandhi","Mandela"];

var sizes = [4, 6, 3, 2, 1, 9];

var mixed = [34, "candy", "blue", 11];
Syntax:
var arrayName = [data, data, data];

Any time you see data surrounded by [ ], it is an array.




NOTE:

Small complication: the position (or the index) of each bit of data is counted starting from 0, not 1.

First element in the array: junk[0]
Third element in the array: junk[2]
Arrays have 0-based indexing, so we start counting the positions from 0.