JSFiddle - React, Tailwind, and code Playground

HTML

<span class="address-link" data-target-id="target-div" data-target="http://site.ru/page1/">вкладка1</span>
<span class="address-link" data-target-id="target-div" data-target="http://site.ru/page2/">вкладка2</span>
<div id="target-div"></div>

CSS

.address-link{
  border-top:1px solid transparent;
}
.active{
  border-top:1px solid #bbb;
}

JavaScript

$('.address-link').click(function(){
   var targetId = $(this).data('target-id');
   var target = $(this).data('target');
   $('.address-link.active').removeClass('active');
   $(this).addClass('active');
   $('#' + targetId).html('<iframe src="'+target +'"></iframe>'); 
});