JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button onclick="calculate()">
Calcular
</button>
<ul id="ul">

</ul>

JavaScript

var count = 1;
var ul = $('ul');

window.calculate = function () {
	var value = ((Math.random() * (7 - -7) + -7) / 100) + 1;
  console.log(value);
	var li = $('<li>').append(count).append(' - ').append(value);
  count += 1;
  ul.append(li);
}