如何启用/禁用html控件＆＃39; AngularJS中的验证

Question

我有一个单选按钮组。第一个用于＆＃34;内部孟加拉国＆＃34;和孟加拉国以外的第二个＆＃34;。如果我点击＆＃34; Inside Bangladesh＆＃34;地址字段（文本框）无需验证，但如果我点击＆＃34;孟加拉国境外＆＃34;将触发地址字段所需的验证。看下面的代码：

<ng-form id="validateReg" name="validateReg">
  <div ng-class="{'has-error': validateReg.chkInside.$invalid}">  
     <label>
           <input type="radio" id="radioInsideBD" required value="1" ng-model="chkInside" name="chkInside" />
           Inside Bangladesh
     </label>
     <label>
           <input type="radio" id="radioOutsideBD" required value="1" ng-model="chkInside" name="chkInside" />
           Outside Bangladesh
     </label>
   </div>
   <div ng-class="{'has-error': validateReg.address.$invalid}"> 
        Address: <textarea type="text" class="form-control" ng-model="address" name="address" id="address"></textarea>
   </div>
</ng-form>

Answer 1

 <div ng-class="{'has-error': (addressRequired ? validateReg.address.$invalid : false)}"> 
        Address: <textarea type="text" class="form-control" ng-model="address" name="address" id="address"></textarea>
   </div>

您应根据所选的单选按钮设置/取消设置addressRequired。

如果选择了Inside Bangladesh，请将其设置为false或true。