LANGUAGE » JAVASCRIPT
Set
Usage
Creating Set
instance:
js
const myset = new Set();
const myset = new Set([1, 2, 2]);
Updating a Set
:
js
myset.add('cat');
myset.delete('dog');
myset.clear();
Convert Set
instance to Array
:
js
const myarr = Array.from(myset);
const myarr = myset.values().toArray();
Get the number of elements in the set:
js
myset.size
Methods
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:
js
myset.has(element);
Update values of all elements:
js
myset.values().map((element) => element.toString());