In JavaScript, Set objects store unique values of any type: primitive values or object references.

Each value in the Set has to be unique, Meaning, a value in the Set occurs only once.

We can create Set objects using the Set constructor.

Syntax

new Set

new Set(iterable)

Passing an iterable is optional. If you don't specify it, the new Set is empty.

We can use Set objects to remove duplicates from an array.

const tech = ["React", "Vue", "Angular", "React", "Vue"]

const techDuplicatesRemoved = [...new Set(tech)]

console.log(techDuplicatesRemoved)

// ["React", "Vue", "Angular"]