map on map object javascript code example

Example 1: object to map javascript

const map = new Map(Object.entries({foo: 'bar'}));

map.get('foo'); // 'bar'

Example 2: key value in map JavaScript mapping object

const map = {"a": 1, "b": 2, "c": 3};
const mapped = Object.entries(map).map(([k,v]) => `${k}_${v}`);
console.log(mapped);