Creates

myFavoriteNumbers

array

let myFavoriteNumbers = [5, 14, 16, 18]

Adds new item

22

to the array

myFavoriteNumbers.push(22)

Adds the array as a new item to the

myFavoriteNumbers

array

myFavoriteNumbers.push([23, 24])

Adds the object to the array as new item

myFavoriteNumbers.push({firstNumber: 25, secondNumber: 26})

Adds the function to the array as new item

myFavoriteNumbers.push(function(){console.log('I am fired!')})

Adds new string item to the array

myFavoriteNumbers.push('27')

Let's fire the function that we added as an item

myFavoriteNumbers[7]()

After running the function the result will be:

I am fired!