Arrays: Number of items in an array

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You can get the number of elements in the array by checking its length property:

const a = [1, 2, 3]
a.length //3

Lessons in this unit:

0: Introduction
1: ▶︎ Number of items in an array
2: Create a new array from an existing array
3: Adding an item to an existing array
4: Adding at the beginning of an array
5: Adding multiple items to the array
6: Removing an item from an array
7: Modifying an existing array without mutating it
8: Arrays of arrays
9: Filling an array
10: Array destructuring
11: Check if an array contains a specific value
12: Array Recipes