Get Number of Rural and Number of Village checkbox checked in gridview

I Have gridview, which will have checkbox and type. The type will be either rural or village. I need to get count of rural and village has been checked in gridview and display in label as

Rural / Village : 15/12

If i Check or uncheck new row, the count value should be update

I have tried this in Jquery but its not worked

 $('#btnGenerate1004MCTop').click(function () {
     var rural = 0;
     var village = 0;
     $("input[id$=chk_Compare]:checked").each(function () {
         if($(this).next("input[id$=type]").val()){
            rural + = 1;
         }
         else {
            village + = 1;
         }
    });
});