AngularJS Dropdown required validation
问题 Following is my code snippet. I want to validate my dropdown using angular. <td align="left" width="52%"> <span class="requiredSmall">*</span> <select class="Sitedropdown" style="width: 220px;" ng-model="selectedSpecimen().serviceID" ng-options="service.ServiceID as service.ServiceName for service in services"> <option value="" ng-selected="selected">Select Service</option> </select> </td> Valid means: Valid values can be anything but "Select Service", it is my default value. Like other ASP