javascript - angular js ng-repeat范围内的单选按钮列表，默认选中

Question

app.controller('radiusController', function($scope){
    $scope.radii = [
        {id:.25, checked:"false", name:"1/4 Mile"},
        {id:.5, checked:"false", name:"1/2 Mile"},
        {id:1, checked:"false", name:"1 Mile"},
        {id:2, checked:"true", name:"2 Mile"},
        {id:3, checked:"false", name:"3 Mile"},
        {id:4, checked:"false", name:"4 Mile"},
        {id:5, checked:"false", name:"5 Mile"}
    ];
    $scope.handleRadioClick = function(radius){
        window.radiochecked = radius.id;
    };
});

<li ng-repeat="radius in radii" id="selectradius-{{radius.id}}">

              <div class="radio">
                <label>

                  <input type="radio" name="radius"
                       ng-model="radius.checked"
                       ng-change="handleRadioClick(radius)">

                  {{radius.name}}

                </label>
              </div>

          </li>

如何根据范围半径的选中值设置要选中的默认单选按钮？在这种情况下，应默认选中“2 英里”。

笨蛋:http://plnkr.co/edit/RP9SpO1qGjn5Ua6pZJ3D?p=preview

Answer 1

简单。尽管 Angular 文档没有提到 ng-checked，但它是可用的。

<input type="radio" name="radius"
                       ng-change="handleRadioClick(radius)"
                       ng-checked="radius.checked">