TypeScript - create Map

In this article, we would like to show you how to create a Map in TypeScript.

1. Create an empty Map

const myMap = new Map<string, number>();

2. Create Map with initial values

const myMap = new Map<string, string>([
  ['key1', 'value1'],
  ['key2', 'value2'],
  ['key3', 'value3'],
]);

Practical example

In this example, we create a Map containing letters as its keys (string type) and ASCII codes as values (number type).

const myMap = new Map<string, number>([
  ['A', 65],
  ['B', 66],
  ['C', 67],
]);