Arrays

Enemy 1 of 5

Every variable so far has held one value at a time. An array changes that: it holds several values in order, all under one name, inside square brackets [ ] separated by commas — a single labeled list of slots instead of one box.

Arrays are everywhere in real JavaScript code because so much real-world data is naturally "a bunch of things": a list of scores, a set of usernames, the items in a shopping cart. Instead of creating fruit1, fruit2, fruit3 as separate variables, you group them into one array and can loop over, search, or grow the whole collection at once.