Javascript confirm return false if cancel

Question

I have a Delete button like so:

<a class="btn btn-default" href="Communities.php?action=delete&id=' . $value['rb_communityId'] . '" onclick="javascript:confirm(\'Are you sure you want to delete this item?\');">Delete</a>

if the user clicks cancel on my confirm back, then I want nothing to happen, is there away if the user clicks cancel it will return false.

Answer 1

<a
  class="btn btn-default"
  href="Communities.php?action=delete&id=' . $value['rb_communityId'] . '"
  onclick="if(!confirm(\'Are you sure you want to delete this item?\')) return false;"
>
  Delete
</a>

Key line that changed is the onclick, where the confirmation has been wrapped in an if(!...) to catch the occasions where cancel is clicked, and returns false if that happens.