JSFiddle - React, Tailwind, and code Playground

HTML

<div id="foo">Hover</div>
<div id="slides">Slides</div>
<div id="contactblurb" class="tab">
  email:  [email protected]
</div>

CSS

.tab {
display: none;    
}

JavaScript

var a = 1;

setInterval(function(){
    if(a == 2) {  
           alert('f'); }
    });
     

function checkb($elem) {
  $('#slides').hide(); 
    $elem.show();
  };

$("#foo").hover(function () {
  checkb($("#contactblurb")) ;
    var = 2;
},
function () {
  // other stuff on exit hover.
  // for demo only
  $("#contactblurb").hide();
  $('#slides').show();  
});