Length

Array.length

You can find the length of an array by using its length property.

var donuts = ["glazed", "powdered", "sprinkled"];
console.log(donuts.length);

Prints: 3

To access the length property, type the name of the array, followed by a period . (you’ll also use the period to access other properties and methods), and the word length. The length property will then return the number of elements in the array.

TIP: Strings have a length property too! You can use it to get the length of any string. For example, "supercalifragilisticexpialidocious".length returns 34.

Length of Array of Arrays

What is the length of the following inventory array?

var inventory = [
  ["gold pieces", 25],
  ["belt", 4],
  ["ring", 1],
  ["shoes", 2]
];

SOLUTION:

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