This document discusses mutator functions in JavaScript that allow modification of array contents without referencing individual elements. It covers adding elements to an array, removing elements from an array, and adding and removing elements from the middle of an array. These functions make difficult array manipulation techniques easier.

1. Arrays
Mutator Functions

2. Mutator Functions
• JavaScript has a set of mutator functions
that allow you to modify the contents of an
array without referencing the individual
elements.
• These functions often make hard
techniques easy.

3. Adding Elements to an Array

4. Adding Elements to an Array

5. Removing Elements from an Array

6. Removing Elements from an Array

7. Adding and Removing Elements from
the Middle of an Array

8. Adding and Removing Elements from
the Middle of an Array

9. Adding and Removing Elements from
the Middle of an Array