function in map reduce code example

Example 1: map and reduce an array in js

const rebels = pilots.filter(pilot => pilot.faction === "Rebels");const empire = pilots.filter(pilot => pilot.faction === "Empire");

Example 2: js map filter reduce

const numbers = [1, 2, 3, 4];
const doubled = numbers.map(item => item * 2);
console.log(doubled); // [2, 4, 6, 8]