In the ES6 release, JavaScript introduced a new built-in class for maps that makes it easier to work with collections. JavaScript Map creates a new array, which contains the results from the iteration over the elements of the array and calls the provided function once for each element in order. It’s an important data structure that has many essential uses.
Table of contents
What is JavaScript map?JavaScript map syntaxJavaScript map methods and use casesInitialize a map with an iterable objectReturn a value mapped to a specific keyReturn a boolean value showing whether a specified key existsReturn the number of entries in the mapReturn a new iterator object that includes the value of each elementRemove specified elements from map objectRemove all elements in map objectMore important map methods:1 Comment