JSFiddle - React, Tailwind, and code Playground

HTML

<input class="one" value="same">
<input class="two" value="same">

CSS

input { display:block; margin:20px; }

JavaScript

$(function() {
      $('input').on('change', this, function(){
        if ($(".one").val() == $(".two").val()) {
            $("input").css("color","red");
        } else {
            $("input").css("color","black");
        }
      }).change();
});