title: Javascript Observable -> delete items of array of objects
body: <p>I have a problem for deleting items of my observable.</p>
  <p>products$: Observable&lt;Product[]&gt;;</p>
  <p>There's the value: <a href="https://i.stack.imgur.com/thD8L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/thD8L.png" alt="enter image description here" /></a>
  We can see 2 types of object: With 'normal' name and with ID like name.
  All the objects with the name starts by 'ID...' is a child reference of a product and i would like to delete all them.</p>
  <p>How can I do this with Rxjs or vanilla js? <br>
  Thanks in advance :) !</p>