I got a string and I need to find out all the data-id
numbers.
This is the string
<li data-type="mentionable" data-id="2">bla bla...
<li data-type="mentionable" data-id="812">some test
<li>bla bla </li>more text
<li data-type="mentionable" data-id="282">
So in the end It will find me this : 2,812,282