asp.net mvc 4 - JQuery always returning false for checkbox value -

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i'm working on c# mvc 4 project , having problems determining if checkbox checked using jquery. basically, need show , hide other controls on page based on value of checkbox. here cshtml code checkbox :

     @if (model.skucustomizations[i].hasstonechange)      {         <div class="two-col-label">@html.displaynamefor(m => m.skucustomizations[i].stone_haschange)</div>         <div id="divstonechange" data-idx="@i" class="two-col-value">             <input type="checkbox" id="chkstone_@i" name="stonechange" checked="@model.skucustomizations[i].stone_haschange">         </div>        <div class="last" />      }

and here code try , pull checked value:

$('#divstonechange').change(function () {     var idx = $('#divstonechange').attr('data-idx')     var stone = $('#chkstone' + idx).is(':checked')     if (stone != false)     {         $("#divvendorcost").show();     }     else     {         var type = $('#ddmetaltype' + idx).val();         var mount = $('#chkmount' + idx).is(':checked')         var subcat = $('#ddsubcat' + idx).val();         if (mount != true && (subcat == "whole set" || subcat == "" || subcat == "-- select --" || subcat == undefined) && (type == "-- not customized --" || type == "" || type == undefined))         {             $("#divvendorcost").hide();         }     } });

$('#chkstone' + idx).is(':checked') returning false no matter value of checkbox. can point out i'm doing wrong?

thanks

you missed _ there in selector

var stone = $('#chkstone_' + idx).is(':checked');            //-----------^---here;

try this,

  ...   var idx = $('#divstonechange').attr('data-idx');   if ($('#chkstone_' + idx).is(':checked'))   {     $("#divvendorcost").show();   }   else   {     var type = $('#ddmetaltype' + idx).val();     var mount = $('#chkmount' + idx).is(':checked')     var subcat = $('#ddsubcat' + idx).val();     if (mount != true && (subcat == "whole set" || subcat == "" || subcat == "-- select --" || subcat == undefined) && (type == "-- not customized --" || type == "" || type == undefined))     {         $("#divvendorcost").hide();     }   }   ..

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