What is JavaScript Map?

What is JavaScript Map?

In the ES6 release, JavaScript introduced a new built-in class for maps that makes it easier to work with collections. In this short tutorial, we’ll discuss JavaScript Map code examples, methods, and use cases, and we’ll introduce advanced concepts to learn.

JavaScript used to be restricted with its collections capabilities. In other languages, you could work with sets, associative maps, lists, and dictionaries, but JavaScript only allowed you to work with arrays. JavaScript developers found a way to map keys to values, but their method came with its own limitations.

In the ES6 release, JavaScript introduced a new built-in class for maps that makes it easier to work with collections. In this short tutorial, we’ll discuss JavaScript Map code examples, methods, and use cases, and we’ll introduce advanced concepts to learn.

We’ll cover:

  • What is JavaScript map?
  • JavaScript map syntax
  • JavaScript map methods and use cases
  • Advanced map concepts

javascript

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