Не выдает “alert” при отправке формы?

$(function() { 
 
  var selectTerritory = $('#selectTerritory').val(); 
  $.ajax({ 
    type: "POST", 
    url: "registration.php", 
    data: { 
      Territory: selectTerritory 
    }, 
    success: function(data) { 
      $('#detale').html(data); 
      $('#selectTerritory').val(selectTerritory); 
    } 
  }); 
 
  $('#selectTerritory').change(function() { 
    var selectTerritory = $(this).val(), 
      name = $('#inputName').val(), 
      email = $('#inputMail').val(); 
    $.ajax({ 
      type: "POST", 
      url: "registration.php", 
      // beforesend:(presend()), 
      data: { 
        Territory: selectTerritory, 
        name: name, 
        email: email 
      }, 
      success: function(data) { 
        $('#detale').html(data); 
        $('#selectTerritory').val(selectTerritory); 
        $('#inputName').val(name); 
        $('#inputMail').val(email); 
      } 
    }); 
  }); 
 
  $(document).on('change', '#selectRayons', function() { 
    var selectRayons = $('#selectRayons').val(), 
      selectTerritory = $('#selectTerritory').val(), 
      name = $('#inputName').val(), 
      email = $('#inputMail').val(); 
    $.ajax({ 
      type: "POST", 
      url: "registration.php", 
      // beforesend:(presend()), 
      data: { 
        Rayons: selectRayons, 
        Territory: selectTerritory, 
        name: name, 
        email: email 
      }, 
      success: function(data) { 
        $('#detale').html(data); 
        $('#selectRayons').val(selectRayons); 
        $('#inputName').val(name); 
        $('#inputMail').val(email); 
      } 
    }); 
  }); 
 
  $(document).on('change', '#selectTowns', function() { 
    var selectTerritory = $('#selectTerritory').val(), 
      selectRayons = $('#selectRayons').val(), 
      selectTowns = $('#selectTowns').val(), 
      name = $('#inputName').val(), 
      email = $('#inputMail').val(); 
    $.ajax({ 
      type: "POST", 
      url: "registration.php", 
      // beforesend:(presend()), 
      data: { 
        Rayons: selectRayons, 
        Territory: selectTerritory, 
        Towns: selectTowns, 
        name: name, 
        email: email 
      }, 
      success: function(data) { 
        $('#detale').html(data); 
        $('#selectTerritory').val(selectTerritory); 
        $('#selectRayons').val(selectRayons); 
        $('#selectTowns').val(selectTowns); 
        $('#inputName').val(name); 
        $('#inputMail').val(email); 
      } 
    }); 
  }); 
 
  $("#myForm").submit(function() { 
    var form = $($this); 
    var error = false; 
    form.find('*').each(function() { 
      if ($(this).val() == '') { 
        alert('Зaпoлнитe пoлe "' + $(this).attr('placeholder') + '"!'); 
        error = true; 
      } 
    }) 
  }); 
 
  if (!error) { 
    var data = form.serialize(); 
    $.ajax({ 
      type: "POST", 
      url: "registration.php", 
      dataType: 'json', 
      data: data, 
      beforeSend: function(data) { 
        form.find('button[type="submit"]').attr('disabled', 'disabled'); 
      }, 
      success: function(data) { 
        if (data['error']) { 
          alert(data['error']); 
        } else { 
          alert('Форма отравлена!'); 
        } 
      }, 
      error: function(xhr, ajaxOptions, thrownError) { 
        alert(xhr.status); 
        alert(thrownError); 
      }, 
      complete: function(data) { 
        form.find('button[type="submit"]').prop('disabled', false); 
      } 
    }); 
    return false; 
  } 
 
});