This code will show you how to get the ID of div tag which is being displayed using jquery
The HTML code will look like
<div id="skills">
<div class="items" id="items1" style="display:none">1</div>
<div class="items" id="items2" >2</div>
<div class="items" id="items3" style="display:none">3</div>
<div class="items" id="items4" style="display:none">4</div>
<div class="items" id="items5" style="display:none">5</div>
</div>
Observe that class name is same so we will use class name to get the ID of div tag which is being displayed
var divId = $("div.items").not(":hidden").prop("id");
The above jquery code will give you the div id