Set collections in JavaScript
Set collections allow you to
create arrays without duplicates. Let's
see how to work with such collections.
First you need to create a collection
with the following command:
let set = new Set;
Once the collection has been created,
new elements can be added to it using
the add method:
let set = new Set;
set.add(1);
set.add(2);
set.add(3);
At the same time, when trying to add an element that already exists in the collection, this element will not be added:
let set = new Set;
set.add(1);
set.add(2);
set.add(3);
set.add(3); // will not be added, because it already exists
Create a Set collection. Use
the add method to add elements
to it. Make sure there are no duplicate
elements added.
