title: Javscript(Vue) Sort Object with arrays by date
body: <p>I have an Object Structure like this:</p>
  <pre><code>{
    1000: [{AnnouncementCode: 1000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 1000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 1000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;}],
    2000: [{AnnouncementCode: 2000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 2000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 2000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;}],
    3000: [{AnnouncementCode: 3000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 3000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 3000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;}],
    4000: [{AnnouncementCode: 4000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 4000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;},{AnnouncementCode: 4000, Name: 'foo', created_at: &quot;2022-02-01T19:52:01.000000Z&quot;}]
  }
  </code></pre>
  <p>I am printing out all in the frontend but for now they are sorted inside every array but not overall.
  I don't know what would be the best way to sort all values from every key globally.</p>
  <p>The Sorting should be by date, so by 'created_at'</p>