pluck

<div id="app">
  <p>
    <select v-model="key">
      <option>name</option>
      <option>id</option>
      <option>age</option>
    </select>
  </p>
  <p>{{ users | pluck(key) }}</p>
</div>

new Vue({
  el: '#app',
  data: {
    key: 'name',
    users: [
      {id: 1, name: 'sato', age: 33},
      {id: 2, name: 'suzuki', age: 26},
      {id: 3, name: 'yamada', age: 40},
    ]
  },
  filters: {
    pluck(users, key) {
      return users.map(user => user[key])
    }
  }
})