JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
<ul id="menu">
      <li id="a" data-target="home.html">Home</li>
      <li data-target="cadastro.html">Cadastro</li>
      <li data-target="listar.html">Listar</li>
    </ul>
    <div id="conteudo"></div>

JavaScript

$('#menu li').click(function(){
		alert('Peguei a página: '+$(this).data('target'));
    $('#conteudo').load($(this).data('target'));
    });