div class="form-group" label class="col-md-2 control-label" for="name"span class="text-danger"*/span用户名:/label div class="col-md-4" ng-class="{ 'has-error' : form.userName.$invalid form.userName.$dirty}" input type="text" class="form-
<label class="col-md-2 control-label" for="name"><span class="text-danger">*</span>用户名:</label>
<div class="col-md-4" ng-class="{ 'has-error' : form.userName.$invalid && form.userName.$dirty}">
<input type="text" class="form-control" id="name" name="userName" placeholder="请输入用户名"
ng-model="userName" required>
</div>
<span ng-show="form.userName.$dirty && form.userName.$invalid">
<span class="text-danger" ng-show="form.userName.$error.required"><span ng-bind="'用户名不能为空'"></span></span>
</span>
</div>
