JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.jsdelivr.net/raphael/2.1.2/raphael-min.js"></script>
<script src="https://cdn.jsdelivr.net/justgage/1.0.1/justgage.min.js"></script>
<form id="form" method="post">
<input type="text" id="cost" placeholder ="enter a number between 0 & 100"  />
 <input type="submit">
 <div id="gauge" class="200x160px"></div>
 </form>

JavaScript

$( "#form" ).submit(function() {
value = $("#cost").val(); 

//Display JustGage
   var g = new JustGage({
    id: "gauge",
    value: value,
    min: 0,
    max: 100,
    title: "Visitors"
  });
    return false;
    });