Set And Map In Javascript

But the main difference is that map allows keys of any type. Alternatively, you can turn a map back into an object or an array with a single line of code. Const s = new set ( [1,2,3,4]);

The ability to add, update, or remove one or more entries from a map object is essential, and every map object will have set(), delete(), and clear() methods. The map allows a single null key at most and any number of null values. Has() returns true if a key exists in a map:

Just like set, map is also used for storing collection of objects as a single unit.

Each value must have a unique key so that they get mapped correctly. Map is another important interface available in the collection interface. Syntax the set() method is represented by the following syntax: Delete() removes a map element specified by the key: