initialize a map js
let map = new Map()
map['bla'] = 'blaa'
map['bla2'] = 'blaaa2'
console.log(map) // Map { bla: 'blaa', bla2: 'blaaa2' }initialize a map js
let map = new Map()
map['bla'] = 'blaa'
map['bla2'] = 'blaaa2'
console.log(map) // Map { bla: 'blaa', bla2: 'blaaa2' }how the map function works javascript
const array = [2, 5, 9];
let squares = array.map((num) => num * num);
console.log(array); // [2, 5, 9]
console.log(squares); // [4, 25, 81]Copyright © 2021 Codeinu
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