How to Initialize a Set in JavaScript - Step by Step Examples

How to Initialize a Set in JavaScript ?

To initialize a set in JavaScript, you can use the Set object.

In this example,

We use the Set constructor, which is a built-in constructor in JavaScript, to create a new, empty set.
We declare a variable named set1 and assign it the result of calling the new Set() constructor.
The new Set() constructor creates an empty set.
We then print the set1 to the console to verify its contents. An empty set in JavaScript is represented as Set {}.

const set1 = new Set();
console.log('Contents of set1:', set1);

Contents of set1: Set {}

In this example,

We use the Set constructor to create a new set and initialize it with elements.
We declare a variable named set2 and assign it the result of calling the new Set() constructor.
We add elements to set2 using the add method. For example, we add the strings 'apple', 'banana', and 'cherry'.
We then print the set2 to the console to verify its contents.

const set2 = new Set();
set2.add('apple');
set2.add('banana');
set2.add('cherry');
console.log('Contents of set2:', set2);

Contents of set2: Set { 'apple', 'banana', 'cherry' }

In this tutorial, we learned How to Initialize a Set in JavaScript language with well detailed examples.