JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" />
<input type="submit" value="submit" disabled>

JavaScript

$(function () {
     $(":text").on('keyup input change', check_submit).each(check_submit);
 });

 function check_submit() {
     var $this = $(this);
     $(":submit").prop("disabled", function () {
         return !$this.val().length;
     });
 }