如何阻止blur（）事件函数触发两次？

Question

I am trying to fetch the records from the database using blur function. There are two input fields where this function triggers. I have used different names, variables, javascript, controller using laravel to fetch the records. I am able to fetch the records through ajax and successfully opens the modal. When the modal pop ups when the blur function triggers, it also triggers the function for the second field.

I just want to trigger the modal according to the field, where the blur triggers and not to trigger twice.

//input field: originS

<script type="text/javascript">
        $(document).ready(function(){
          var  origin = "";
          var _token = "";
          var ovalue = "";
        $('#originS').blur(function(){
           ovalue = "";
           origin = $(this).val();
           _token = $('input[name="_token"]').val();
          $.ajax({
              type: 'POST',
              url: '{{ route('pagescontroller.fetchOrigin') }}',
              data:{origin:origin, _token:_token},
              success: function(response){

                if(response){
                $("#originSelect").modal('show');
                console.log(response);
                $(".result").html(response);

                 $(document).on('change', '#selectSuburb', function () {

                    ovalue =   $(this).val();
                   if ($(this).is(':checked')) {
                   $('#originS').val(ovalue);
                   $("#originSelect").modal('hide');
                   $this.die('blur');
                 }

                 });

                 $('#originSelect').on('hidden.bs.modal', function (e) {
                       if (ovalue == "") {
                       $("#originS").val('');
                       $(".result").html(response);
                      }
                 });


               }
              },
          });
        });
        });
        </script>

//input field: destS

    </script>

    <script type="text/javascript">
    $(document).ready(function(){
    var  dest = "";
    var _token = "";
    var dvalue = "";
    $('#destS').blur(function(){
      dvalue = "";
      dest = $(this).val();
       _token = $('input[name="_token"]').val();
      $.ajax({
          type: 'POST',
          url: '{{ route('pagescontroller.fetchdest') }}',
          data:{dest:dest, _token:_token},
          success: function(response){
            if(response){
            $("#destSelect").modal('show');
            console.log(response);
            $(".dresult").html(response);

             $(document).on('change', '#selectSuburbdest', function () {

                dvalue =   $(this).val();
               if ($(this).is(':checked')) {
               $('#destS').val(dvalue);
               $("#destSelect").modal('hide');
               $this.die('blur');
             }

             });

             $('#destSelect').on('hidden.bs.modal', function (e) {
                   if (dvalue == "") {
                   $("#destS").val('');
                   $(".dresult").html(response);
                  }
             });


           }
          },
      });
    });
    });
    </script>