JSFiddle - React, Tailwind, and code Playground

HTML

<div>Title <a href="#" class="toggle">+</a>
<div class="content">...content...</div></div>
<div>Title <a href="#" class="toggle">+</a>
<div class="content">...content...</div></div>
<div>Title <a href="#" class="toggle">+</a>
<div class="content">...content...</div></div>

JavaScript

$(document).on('click', '.toggle', function(e) {
    $(e.currentTarget).parent().find('.content').toggle();
});