map through object and only change certain index code example

Example 1: map index

array.map((currentelement, index) => {
	
});

Example 2: array map javascript

const array1 = [1, 4, 9, 16];

// pass a function to map
const map1 = array1.map(x => x * 2);

console.log(map1);
// expected output: Array [2, 8, 18, 32]