JSFiddle - React, Tailwind, and code Playground

HTML

<p class="linkPost" idPost="25"><a href="#">PHP</a></p>
<p class="linkPost" idPost="26"><a href="#">HTML</a></p>
<p class="linkPost" idPost="27"><a href="#">JAVASCRIPT</a></p>

JavaScript

$('.linkPost').on('click', function(){
     var id = $(this).attr('idPost');
     alert(id);
});