JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
<div id="lista-noticias">
      // outros codigos html
  <div class="box-noticia">
    <div class="conteudo-noticia">
      <a href="qualquer.coisa1.html">
    </div>
  </div>

<div class="box-noticia">
  <div class="conteudo-noticia">
    <a href="qualquer.coisa2.html">
  </div>
</div>

<div class="box-noticia">
  <div class="conteudo-noticia">
    <a href="qualquer.coisa3.html">
  </div>
</div>

<div class="box-noticia">
  <div class="conteudo-noticia">
    <a href="qualquer.coisa4.html">
  </div>
</div>
      // outros codigos html
</div>

CSS

#lista-noticias {
  width: 500px;
  height: 500px;
  background-color: darkblue;
  color: white;
}

JavaScript

$(document).ready(function() {

  $('#lista-noticias .box-noticia .conteudo-noticia').each(function() { 
    alert("teste");
  });

});