Javascript AngularJS仅显示一个ng开关

我有一个带有

angularjs

的应用程序，错误范围在那里。我有10种不同的错误类型，必须在一瞬间显示1个错误

span

我有：

<div>
  <span ng-switch="{{err == 1}}" ng-model="login_error_message">Error1</span>
  <span ng-switch="{{err == 2}}" ng-model="login_error_message">Error1</span>
  <span ng-switch="{{err == 3}}" ng-model="login_error_message">Error1</span>
  ...
</div>

---

谢谢。

您的交换机设置不正确

<div ng-switch on="err">
  <span ng-switch-when="1" ng-model="login_error_message">Error1</span>
  <span ng-switch-when="2" ng-model="login_error_message">Error1</span>
  <span ng-switch-when="3" ng-model="login_error_message">Error1</span>
</div>

错误1
错误1
错误1

<div ng-switch on="err">
  <span ng-switch-when="1" ng-model="login_error_message">Error1</span>
  <span ng-switch-when="2" ng-model="login_error_message">Error1</span>
  <span ng-switch-when="3" ng-model="login_error_message">Error1</span>
</div>