Update value of input inside hidden div

Update value of input inside hidden div

Hi all,
I'm new to Javascript and jQuery, but trying to learn fast. Any pointers are appreciated!

I've got a select box that, when you choose any option besides #5, it changes the value of a related input box from 0 to 1. This works great except when I hide() the div that wraps this input box.

My overall goal is to have the input (and surrounding div) hidden via hide(), and then update this input box when a select is changed. Here is my code:

  1.   $(document).ready(function(){
       
      $("div#edit-qty-56-wrapper").hide();

      function enterQty() {
        var attrValue = $( "select#edit-attributes-56-1" ).val();
        if (attrValue !== '5') {
          $("input#edit-qty-56").val('1');
        } else {
          $("input#edit-qty-56").val('0');
        }
      }
     
      $("select#edit-attributes-56-1" ).change(enterQty);
        enterQty();
     
      });