$(document).ready(function () {
$("#z").change(function () {
var options = {};
options.url = "/kontierung/changeZeitraum";
options.type = "POST";
options.data = JSON.stringify({ zeitraum: $("#z").val() });
options.dataType = "json";
options.contentType = "application/json";
options.success = function (changeZeitraum) { $("#z").empty(); };
$.ajax(options);
this.form.submit($("#z").val());
});
});
here is my code in better view