How to Create a Set. You can create a JavaScript Set by: Passing an array to new Set() Create an empty set and use add() to add values

Oct 8, 2014 · A set is data structure which allows storage of unique values of any type, whether this are primitive values or object references. A set can be declared using the ES6 built in set constructor in the following manner: const set = new Set([1, 2, 3, 4, 5]);

Apr 2, 2025 · Set objects are collections of values. A value in the set may only occur once; it is unique in the set's collection. You can iterate through the elements of a set in insertion order.

Mar 5, 2025 · Methods of Set in JavaScript. Set.add() : adds the new element with a specified value at the end of the Set object. Set.delete() : deletes an element with the specified value from the Set object. Set.clear(): removes all the element from the set.

Complete JavaScript Set Reference. The reference contains descriptions and examples of all Set Properties and Methods. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, …

Oct 5, 2020 · Here's how to create a Map with three key-value pairs: Which returns a Map with three elements: To add value to a Map, use the set(key, value) method. The set(key, value) method takes two parameters, key and value, where the key and value can be of any type, a primitive (boolean, string, number, etc.) or an object: Output:

Summary: in this tutorial, you will learn about the JavaScript Set object that allows you to manage a collection of unique values of any type effectively. ES6 provides a new type Set that stores a collection of unique values of any type. To create a new empty Set, you use the following syntax:

How to Create a Set. You can create a JavaScript Set by: Passing an Array to new Set() Create a Set and use add() to add values

Feb 10, 2023 · There are three major iterables available in JavaScript: Arrays, Maps, and Sets. In this article, we will cover the following topics: What is an Array? What is a Set? What is a Map? How to Create a Set a. How to Create a Set with a Value; Properties and Methods of a Set a. How to use the add method in a set b. How to use the has method in a set c.

To create a set in JavaScript, you can use the built-in Set object. Here's an example: In this example, `mySet` is a Set object that contains the values 1, 2, and 3. You can also create an empty set and add values to it using the `add ()` method: