如何在AngularJS中按名称计算单选按钮的数量

Question

我想知道如何使用指令在AngularJS中按名称获取单选按钮的数量。

<label ng-repeat="elements in [1,2,3,4,5,6,7]">
      <input type="radio" name="phone" ng-model="phone" value="example"> 
</label>

<!--Directive by name (phone), number of radio buttons is 7-->

<label ng-repeat="elements in [1,2,3,4,5,6,7,8,9]">
      <input type="radio" name="OS" ng-model="OS" value="example"> 
</label>

<!--Directive by name (OS), number of radio buttons is 9-->

Answer 1

可能在范围上分配一些值：$scope.myList = [1,2,3,4,5,6,7,8,9];。并在视图上显示列表的长度，如：{{ myList.length }}。