Arrays

(Selecting items in arrays)

An array is a list that stores multiple values in one place.

Classroom Cubbies Example

[“Pencil”, “Marker”, “Crayon”]

• Each cubby has a number called an index
• JavaScript starts at 0: 0 → Pencil, 1 → Marker, 2 → Crayon

Getting an Item

let artSupplies = [“Pencil”, “Marker”, “Crayon”]; console.log(artSupplies[1]); // “Marker”

Arrays are great for:

• Game levels
• Player names
• Inventory items
• High scores

Mini-Quiz

1. What index number is the first item in an array?
2. If pets = [“cat”, “dog”, “fish”], what is pets[2]?