Forwarding values in a JavaScript function in a post manner

function fn_edit_username(method, path) {

        method = method || "post";
        var form = document.createElement("form");
        form.setAttribute("method", method);
        form.setAttribute("action", path);

        swal({   title: "An input!",
                  text: "Write something interesting:",
                  type: "input",
                  showCancelButton: true,
                  closeOnConfirm: false,
                  animation: "slide-from-top",
                  inputPlaceholder: "Write something"
          }, }, function(inputValue) {
                if (inputValue === false)
                  return false;

                if (inputValue === "") {
                  swal.showInputError("You need to write something!");
                  return false;
                }

                swal("Nice!", "You wrote: " + inputValue, "success");
                document.body.appendChild(form);
                form.submit();

            });


      }

app.post('/edit_username', function(req, res) {
  pool.getConnection(function(err, conn) {
      console.log(req.body.editname);

    });
});