javascript - 如何在 AngularJS 中使用 ng-repeat 时显示特定项目内的数据？

Question

我正在尝试使用 Angular JS 制作一个测验应用程序。当用户选择正确的答案时，我想在该项目内显示一个图标。问题是图标被应用于列表中的每个项目。我该如何解决这个问题？

这是代码

   <md-radio-group ng-model="test.selected" ng-change="test.onChange(test.selected)">
   <md-radio-button ng-repeat="item in test.items" value="{{item}}" class="md-accent" ng-click="test.validate($index)">
   {{item}}
   <md-icon class="material-icons md-secondary right" ng-show="test.isCorrect">done</md-icon>
   <md-icon class="material-icons md-secondary wrong" ng-show="test.isNotCorrect">clear</md-icon>
   </md-radio-button>
   </md-radio-group>

这是一个 plunker 演示 plunkr

Answer 1

我对你的插件做了一些更改，

Changed link

(function(){
    angular.module('app')
            .controller('testCtrl', ['$scope', function($scope){
                var vm = this;
                vm.items = ['Dignity','Pretty','Cheap','Expensive'];
                vm.right = 0;
                vm.onChange = function(selected){
                        console.log(selected);
                    }
                vm.validate = function(index){
                    console.log(index);
                    if(index === vm.right){
                        vm.isCorrect = vm.items[index];
                        vm.isNotCorrect = "";
                    }
                    else{
                        vm.isNotCorrect = vm.items[index];
                        vm.isCorrect = "";
                    }
                }
            }])
})();

并且在 View 中

<md-icon class="material-icons md-secondary right" ng-show="test.isCorrect==item">done</md-icon>
<md-icon class="material-icons md-secondary wrong" ng-show="test.isNotCorrect==item">clear</md-icon>