JSFiddle - React, Tailwind, and code Playground

HTML

<div id="nav">
    <ul>
      <li><a href="#">About</a></li>
      <li><a href="#">Email</a></li>
      <li><a href="#">Contact</a></li>
    </ul>
    <div id="about">
      about
    </div>
    <div id="contact">
      contact
    </div>
</div>

JavaScript

$(document).ready(function(){
$('#nav div').hide();
$('#nav div:first').show();
$('a').click(function(){     
    var currentTab = '#'+$(this).text().toLowerCase();
    if($(currentTab).is(':visible')){
        $('#nav div').hide();
        $(currentTab).hide();
    }else{
        $('#nav div').hide();
        $(currentTab).show();
    }
}
);
});