Question

I have this problem where I do an .each() on this group of selects, for each one it fires off a call to the server for some data to populate it with. However I couldn’t figure out why it would only populate the bottomest one. Then I threw in some alerts() and realized it was only running the call back function on the last one multiple times. I realized that by the time the first JSON call was done, $(this) was something different… How can I get it to wait so all of them will be populated by the proper call?

HERE IS THE SCRIPT PART:

var thisbundle;
var testcount = 0;

//get bundle options first..
$("select.bundle").each(function() {

  thisbundle = $(this);
  testcount++;
  var url = "/order/getpricing/" + thisbundle.attr("id");

  //clear it out...
  //thisbundle.children().remove();

  var passbundle = thisbundle;
  $.getJSON(url, function(data, passbundle) {
    var options = '';
    for (n = 0; n < data.length; n++) {
      options += '<option value="' + data[n].volumeID + '">' + explainPricing(data, n) + '</option>';

    }
    passbundle.html(options);
  });
});

AND HERE IS THE FORM PART:

<div id="bundles">
<table>
    <%foreach (KODmvc.Models.Product prod in Model.products)
      {%>
            <%if (prod.NumberOfCourses > 1)
              { %>
                <tr><td><img src="<%=prod.Icon %>" /></td><td><b><%=prod.Title%></b><br /><%=prod.Description%></td><td><select class="bundle" id="<%=prod.ProductID %>"><option value="-1">None</option>"</select></td></tr>
            <%} %>
    <%} %>
    </table>
</div>

Answer 1

Declare thisbundle in your function and not in the global scope:

$("select.bundle").each(function(){
    var thisbundle = $(this);
    // …
});

Otherwise the global object would be overwritten with each iteration that the callback function would then use.