jquery json post

gistfile1.txt

    $.ajax(create_url, {
      contentType: 'application/json',
      dataType: 'json',
      type: 'POST',
      data: JSON.stringify(data)
    })
    .done(function(result) {
      var id = result.surveys[0].id;
      navigateToSurvey(id);
    });