JSFiddle - React, Tailwind, and code Playground

by arpit

HTML

<div id="countup"></div>|<div id="countdown"></div>

CoffeeScript

@a = 1
t = setInterval =>
  if @a is 100
    clearInterval t
    alert 'STOPPED'
  @a = @a+1;
  $('#countdown').text(@a-1)
  $('#countup').text(@a+1)
 , 2000