javascript - 使用angularjs恢复默认下拉值

Question

虽然我已经让这个工作了，但它的工作方式似乎不合适。我有一个显示团队列表的下拉列表 (DDL)。顶部和默认条目是“选择团队...”。尽管我的 DDL 与模型相关联，但“选择团队...”不应该是其中的一部分，因为“选择团队...”对域模型没有任何意义。

当用户点击“添加新”时，表单将被清除，所有 DDL 应恢复为默认值。

这里是相关的 Controller 函数:

scope.addUser = function() {
  resetToNewUser();
  $scope.profileVisible = true;
  $scope.oneAtATime = true;
  $scope.accordionStatus = { isFirstOpen: true, isFirstDisabled: false };
}

function resetToNewUser() {
  $scope.selectedUser.NtId = "";
  $scope.selectedUser.UserId = -1;
  $scope.selectedUser.IsActive = true;
  $scope.selectedUser.FirstName = "";
  $scope.selectedUser.LastName = "";
  $scope.selectedUser.JobTitle = "";
  $scope.selectedUser.Email = "";
  $scope.selectedUser.SecondaryEmail = "";
  $scope.selectedUser.PhoneNumber = "";
  for(var i = 0; i < $scope.roleList.length; i++) {
    if($scope.roleList[i].RoleSystemName.trim() === "BLU") {
      $scope.selectedUser.Role = $scope.roleList[i];
    }
  }
  $scope.selectedUser.SupervisorId = null;
  //HACK BELOW//
  document.getElementById('selTeam').selectedIndex = 0; // <-- This works, but feels like a hack.
  $scope.selectedUser.IsRep = false;
  for(var i = 0; i < $scope.signingAuthorityList.length; i++) {
    if($scope.signingAuthorityList[i].SigningAuthoritySystemName === "SME") {
      $scope.selectedUser.SigningAuthority = $scope.signingAuthorityList[i];
    }
  }
  $scope.selectedUser.IsOutOfOfficeEnabled = false;
  $scope.selectedUser.OutOfOfficeStartDate = null;
  $scope.selectedUser.OutOfOfficeEndDate = null;
  $scope.selectedUser.OutOfOfficeAppointedRepId = null;
}

DDL 在模板中的定义方式如下:

<div class="form-group">
  <label for="" class="control-label col-sm-2 required">Team</label>
  <div class="col-sm-10">
    <select class="form-control" id="selTeam"
            ng-model="selectedUser.Team"
            ng-options="team as team.TeamName for team in teamList track by team.TeamId">
      <option value="">Select Team...</option>
    </select>
  </div>
</div>

有更好的方法吗？

Answer 1

您总是可以删除用户选择占位符选项的功能，对吗？像这样:

<option value="" disabled selected hidden>Select Team...</option>