javascript - 使用 AngularJS 验证单选按钮集

Question

我的代码如下所示:

 <ng-form name="form">

    <div>
        Question 1
        <label>
            <input type="radio" ng-model="q1" style="visibility: initial; position: relative;"
                   ng-value="false">
               No
        </label>

        <label>
            <input type="radio" ng-model="q1" style="visibility: initial; position: relative;"
                   ng-value="true" ng-required="!(q1||q2||q3)">
                Yes
        </label>

    </div>

    <div  ng-show="!q1">
        Question 2 
        <br/>
        <label>
            <input type="radio" ng-model="q2" style="visibility: initial; position: relative;"
                   ng-value="false">
            No            </label>
        <br/>
        <label>
            <input type="radio" ng-model="q2" style="visibility: initial; position: relative;"
                   ng-value="true" ng-required="!(q1|| q2|| q3)">
                Yes            </label>
        <br/>
    </div>

    <div ng-show="!q1 && !q2">
       Question 3
        <br/>
        <label>
            <input type="radio" ng-model="q3" style="visibility: initial; position: relative;"
                   ng-value="false">
                No
        </label>
        <br/>
        <label>
            <input type="radio" ng-model="q3" style="visibility: initial; position: relative;"
                   ng-value="true" ng-required="!(q1|| q2|| q3)">
                Yes
        </label>
        <br/>

    </div>

    </ng-form>

所以，对于问题，我需要一个(而且只有一个)"is"的答案。但是，$form.invalid 始终为 false。我看到 'required="required"' 在应该添加时已成功添加到输入字段，因此 ng-required 条件可以正常工作;)。

http://jsfiddle.net/ahL58/134/

Answer 1

按组为 radio 输入命名。否则表单将无法检查验证