ja Map() code example

Example 1: nodejs map

let wrongMap = new Map()
wrongMap['bla'] = 'blaa'
wrongMap['bla2'] = 'blaaa2'

console.log(wrongMap)  // Map { bla: 'blaa', bla2: 'blaaa2' }

Example 2: javascript map

const numbers = [0,1,2,3];

console.log(numbers.map((number) => {
  return number;
}));