JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <input id="test" value='0'>
</div>
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js'></script>

JavaScript

(function($) {
  var oldHTML = $.fn.html;

  $.fn.formhtml = function() {
    if (arguments.length) return oldHTML.apply(this,arguments);
    $("input,button", this).each(function() {
      this.setAttribute('value',this.value);
    });
    $("textarea", this).each(function() {
      // updated - thanks Raja!
      this.innerHTML = this.value;
    });
    $("input:radio,input:checkbox", this).each(function() {
      // im not really even sure you need to do this for "checked"
      // but what the heck, better safe than sorry
      if (this.checked) this.setAttribute('checked', 'checked');
      else this.removeAttribute('checked');
    });
    $("option", this).each(function() {
      // also not sure, but, better safe...
      if (this.selected) this.setAttribute('selected', 'selected');
      else this.removeAttribute('selected');
    });
    return oldHTML.apply(this);
  };

  //optional to override real .html() if you want
  // $.fn.html = $.fn.formhtml;
})(jQuery);


setInterval(function() {
  $('input').val(parseInt($('input').val()) + 1);
  console.log('result: ', $('div').formhtml());
}, 1000);