We've seen how arrays hold collections of items, and how we can add (.push()) or remove (.pop()) items.

But how can we easily find out exactly how many items are currently inside an array?

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Any ideas?

Every array has a length, which is simply the count of items it contains.

An array like [10, 20, 30] has a length of three. An empty array [] has a length of zero.

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Does the length change when we push or pop items?

JavaScript arrays have a built-in property called .length to get the number of items. Unlike a method, it's a property that you access directly without parentheses ().

You use it like this: yourArray.length.

What kind of value do you expect .length to give back?

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Do you think it'll be a string, a number, or something else?

That's right! The .length property returns a number representing the count of items.