javascript map function on string code example

Example 1: 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]

Example 2: map a property from array of objects javascript

var result = objArray.map(function(a) {return a.foo;});