LANGUAGE » JAVASCRIPT

Set

Last updated:

Reference:developer.mozilla.org

Usage

Creating Set instance:

javascript

const myset = new Set();
const myset = new Set([1, 2, 2]);

Updating a Set:

javascript

myset.add('cat');
myset.delete('dog');
myset.clear();

Convert Set instance to Array:

javascript

const myarr = Array.from(myset);
const myarr = myset.values().toArray();

Get the number of elements in the set:

javascript

myset.size

Method	Description
`has`	Boolean indicating whether an element with the specified value exists in this set or not.
`values`	Iterator that contains the values for each element in this set.
`A.difference(B)`	All elements in A but not in B.
`A.intersection(B)`	All elements common to A and B.
`A.symmetricDifference(B)`	Inverse of `intersection`.
`A.union(B)`	All elements of A and B.

Check if the set contains a value:

javascript

myset.has(element);

Update values of all elements:

javascript

myset.values().map((element) => element.toString());