JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" value="ff">
<input type="text" value="ww">
<input type="text" value="cc">

JavaScript

(function($) {
  $('input').on('input', function() {
    if (this.value) {
      this.style.backgroundColor = 'white';
    } else {
      this.style.backgroundColor = 'green';
    }
  });
})(jQuery);