Wordpress product configurator conditional logic code

<script>

jQuery(document).ready(function($) {

  function checkFunction(color) {
    console.log(color);
    var x = $("li." + color);
    var exists = false;
    for (var i = 0; i < x.length; i++) {
      if($(x[i]).hasClass("active")) {
          exists = true;
      }
    }
    
    if (exists) {
      for (i = 0; i < x.length; i++) {
        $(x[i]).children("button").attr('disabled', 'disabled');
      } 
    } else {
      for (i = 0; i < x.length; i++) {
        $(x[i]).children("button").removeAttr('disabled');
      } 
    }
  }
  
  function checkAll() {
      checkFunction('color-yellow');
      checkFunction('color-black');
      checkFunction('color-red');
           checkFunction('color-natural');
      checkFunction('color-green');
      checkFunction('color-blue');
  }
  
  $(document).on('click', '.choice-item', checkAll);
  $( document ).ready(function() {
    checkAll();
  })
  
});

</script>