extractNames.js

const users = [
  { name: "Rick", age: 60 },
  { name: "Morty", age: 13 },
  { name: "John Doe", age: 30 }
];

const names = [];
for (var i = 0; i < users.length; i++) {
  const name = users[i].name;
  names.push(name);
}
// [ 'Rick', 'Morty', 'John Doe' ]