How do I convert a javascript object array to a string array of the object attribute I want? [duplicate]

var items = [{
  id: 1,
  name: 'john'
}, {
  id: 2,
  name: 'jane'
}, {
  id: 2000,
  name: 'zack'
}];

var names = items.map(function(item) {
  return item['name'];
});

console.log(names);
console.log(items);