javascript - MVC DropDownList selection changed not firing Ajax -


i new mvc , have been doing lots of looking, can't figure out why isn't working.

i have following view code:

$(function() {     $("#ddlnumberofrecords").change(function() {          var numberofrecords = $("#ddlnumberofrecords").val();          $.ajax({             type: "post",             url: '@url.action("numberofrecordschanged")',             data: { numberofrecords: numberofrecords },             success: function(returndata) {                 if (!returndata.ok) {                     window.alert(' error : ' + returndata.message);                 } else {                     $('#grid').html(returndata);                 }             }         });     }); });  @html.dropdownlist("ddlnumberofrecords", model.numberofrecordsselectlist)

can tell me wrong that? also, there way debug javascript? put breakpoints on there, never load.

edit: action. there no real content yet because trying work @ point. have breakpoint , never gets hit.

[httppost]     public actionresult numberofrecordschanged(int numberofrecords)     {         return null;     }

with shown code works 100%. made mock prove that.

controller

 public actionresult index()         {             viewmodel model = new viewmodel             {                 numberofrecordsselectlist = new list<selectlistitem>                 {                    new selectlistitem                    {                        selected = false,                        text = "one",                        value = "1",                    },                     new selectlistitem                    {                        selected = false,                        text = "two",                        value = "2",                    },                 }             };              return view(model);         }      [httppost]     public actionresult numberofrecordschanged(int numberofrecords)     {         return null;     }

view

@model mvcapplication1.models.viewmodel <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script type="text/javascript">     $(function() {         $("#ddlnumberofrecords").change(function() {              var numberofrecords = $("#ddlnumberofrecords").val();              $.ajax({                 type: "post",                 url: '@url.action("numberofrecordschanged")',                 data: { numberofrecords: numberofrecords },                 success: function (returndata) {                     //no return data proviced                      //if (!returndata.ok) {                     //    window.alert(' error : ' + returndata.message);                     //} else {                     //    $('#grid').html(returndata);                     //}                 }             });         });     }); </script> @html.dropdownlist("ddlnumberofrecords", model.numberofrecordsselectlist)

if getting error please share how creating list items, error is, , other details relevant problem. thanks.


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