Summary  
This chapter explains how to use an array’s length property to retrieve and dynamically update the count of elements it contains.

General domain of usage  
Iterating over data collections in loops.

The `length` property can be used to quickly get the **amount of elements** in an array:

let numbers = [5, 7, 9, 10, 15, 25, 30, 35];
console.log("There are", numbers.length, "numbers in the array.");

A **property** is a variable associated with an object. It represents an **attribute** or characteristic of that object. In this case, the `length` is a property of the array object, and it returns the number of elements in the array. You can access properties the same way you access methods: `objectName.propertyName`.

Definition

What does the `length` property of an array return?

What will be the output of the following code?

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The `length` Property

1. What does the `length` property of an array return?

2. What will be the output of the following code?

The `length` Property

1. What does the `length` property of an array return?

2. What will be the output of the following code?

The `length` Property

1. What does the length property of an array return?

2. What will be the output of the following code?

The `length` Property

1. What does the length property of an array return?

2. What will be the output of the following code?

1. What does the `length` property of an array return?

1. What does the `length` property of an array return?