JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tohide">Coucou</div>
<input type="button" class="bouton_tohide" value = "En savoir plus ?" /><br><hr>
<div class="tohide">la</div>
<input type="button" class="bouton_tohide" value = "En savoir plus ?" /><br><hr>
<div class="tohide">team</div>
<input type="button" class="bouton_tohide" value = "En savoir plus ?" /><br><hr><div class="tohide">developpez</div>
<input type="button" class="bouton_tohide" value = "En savoir plus ?" /><br><hr>

CSS

div { display: none; height: 50px; }

JavaScript

$('.bouton_tohide').on('click', function(){
    $('.bouton_tohide').val('En savoir plus ?').filter(this).val('Fermer');
    $('.tohide').slideUp(300).filter($(this).prev('.tohide')).slideDown(300);
});