Map - JavaScript | MDN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map
let first = new Map ([[1, 'one'], [2, 'two'], [3, 'three'],]) let second = new Map ([[1, 'uno'], [2, 'dos']]) // Merge two maps. The last repeated key wins. The last repeated key wins. // Spread operator essentially converts a Map to an Array let merged = new Map ( [ ... first , ... second ] ) console . log ( merged . get ( 1 ) ) // uno console . log ( merged . get ( 2 ) ) // dos console . log ( merged . get ( 3 ) ) // three
DA: 86 PA: 67 MOZ Rank: 54
