map.js

// map with arrow function 

const names = ['Ilya', 'Alena', 'Nadia', 'Sasha'];
const members = names.map((name, index) => "member " + index + " " + name);

console.log(names);
console.log(members);

// map with function

const names = ['Ilya', 'Alena', 'Nadia', 'Sasha'];
const members = names.map(function(name, index) {
  return "member " + index + " " + name;
});

console.log(names);
console.log(members);

// map with function expression

const names = ['Ilya', 'Alena', 'Nadia', 'Sasha'];

const namesToMembers = function (name, index) {
  return "member " + index + " " + name;
}

const members = names.map(namesToMembers);

console.log(names);
console.log(members);

// map with function declaration

const names = ['Ilya', 'Alena', 'Nadia', 'Sasha'];

function namesToMembers(name, index) {
  return "member " + index + " " + name;
}

const members = names.map(namesToMembers);

console.log(names);
console.log(members);