This useful array method creates a new array with all elements that pass the test implemented by…
The set object lets you store unique values of any type, whether primitive values or object references.
The weakSet object lets you store weakly held objects in a collection.
The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and…
The WeakMap object is a collection of key/value pairs in which the keys are weakly referenced. The keys must be objects…
WeakMap
This useful array method creates a new array with the results of calling a provided function on…
To keep the unique value of a large data set, Set would be a good option.
The Map object holds key-value pairs and remembers the original insertion order…