Dynamic Tabs, where href starts with number, not working

Created by: PackeTsar

Example: https://jsfiddle.net/wcq4L2fr/1/

When the nav-link href starts with a number, or is only a number (<a class="nav-link" data-toggle="tab" href="#1">), it will not expose the referenced contents (<div class="tab-pane fade" id="1">).

If the nav-link href is simply alpha, or begins with an alpha character, it works fine.