JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.3/jquery.min.js"></script>

JavaScript

var timer = 20;
 var _incrementTimer = setInterval(() => {
  console.log('Current time: ', timer);
  if (timer >= 0.1) {
    timer -= 0.1;
  } else {
    clearInterval(_incrementTimer);
  }
}, 100);