Sometimes, we want to call .map() a JavaScript ES6 Map with JavaScript.
In this article, we’ll look at how to call .map() a JavaScript ES6 Map with JavaScript.
How to call .map() a JavaScript ES6 Map with JavaScript?
To call .map() a JavaScript ES6 Map with JavaScript, we convert it to an array, and then back to a map.
For instance, we write
const myMap = new Map([
["thing1", 1],
["thing2", 2],
["thing3", 3],
]);
const newEntries = Array.from(myMap, ([key, value]) => [key, value + 1]);
const newMap = new Map(newEntries);
to call Array.from with myMap and a callback to map the values to a new values for the map.
Then we create the map from the newEntries array.
Conclusiin
To call .map() a JavaScript ES6 Map with JavaScript, we convert it to an array, and then back to a map.
