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JavaScript Essentials for Beginners - 1768407374405

bookThe `length` Property

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

12
let numbers = [5, 7, 9, 10, 15, 25, 30, 35]; console.log("There are", numbers.length, "numbers in the array.");
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Note
Definition

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.

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

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

question mark

What does the length property of an array return?

Select the correct answer

question mark

What will be the output of the following code?

Select the correct answer

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Sektion 1. Kapitel 63

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bookThe `length` Property

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

12
let numbers = [5, 7, 9, 10, 15, 25, 30, 35]; console.log("There are", numbers.length, "numbers in the array.");
copy
Note
Definition

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.

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

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

question mark

What does the length property of an array return?

Select the correct answer

question mark

What will be the output of the following code?

Select the correct answer

Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 1. Kapitel 63
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