JSFiddle - React, Tailwind, and code Playground

HTML

<div>Title <a href="#" class="myanchor">+</a>
<div id="b1">...content...</div></div>

<!--..... n times this structure ....-->

<div>Title <a href="#" class="myanchor">+</a>
<div id="bN">...content...</div></div>

JavaScript

$(function() {
    $('a.myanchor').on('click', a);
    function a(e) {
        e.preventDefault();
        $(this).next('div').toggle();
    }
});