.unshift lets you put something at the beginning of an array in JavaScript the way .push would put something at the end

Per this, this is an example:

var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.unshift("Lemon","Pineapple");

 
 

Which would make an array holding:

1. Lemon
2. Pineapple
3. Banana
4. Orange
5. Apple
6. Mango