I'm delighted to welcome you to our JavaScript Sets lesson! Remember, sets are like arrays or objects, except they can only hold unique elements. They're especially useful when you need to guarantee that elements in a collection appear only once.

In this lesson, you'll consolidate your knowledge of creating and operating on sets. You will learn about the advantages of using sets and how they enhance performance. Ready, Set, Go!

Let's begin by creating a set in JavaScript. It can be done using the Set() constructor.

JavaScript provides methods to manipulate sets, such as add(), has(), delete(), and clear().

• add(): Adds a specified element to the set.