要求：当我进入默认数据加载页面时，（默认数据在scope中可用），但当我选择特定的教学大纲时，我需要仅显示选定的教学大纲数据，因此我清除了scope.quizdata并将过滤后的数据分配给scope.quizdata。现在，scope值符合要求，但未反映在显示中（显示默认数据，但我需要过滤后的数据）

$scope.filterSyllabus = function () {
            var data = $scope.quizdata

            $scope.quizdata = [];

            var getsyllabuslistarray = [];
            if (data.length > 0) {
                 getsyllabuslistarray = data.filter((item) => {
                    if ($scope.assessment.sellectedSyllabusName.length > 0) {
                        if (item.syllabus_id == $scope.assessment.sellectedSyllabusName[0].id) {
                            return item;
                        }
                    }else{
                       return $scope.originalQuizData;
                    }
                });

                $scope.quizdata = getsyllabuslistarray             
            }
        }

<div class="box box-solid " ng-class="flashback" ng-if="quizdata">
    <div class="box-body">
        <flash-message duration="5000" show-close="true" on-dismiss="myCallback(flash);">
        </flash-message>
        <loading></loading>
        <!-- Color Picker -->
        <div ng-class="quizlistmobile">
            <table class="table table-bordered bordered table-striped table-condensed datatable" ng-if="quizdata" datatable="ng" ui-jq="dataTable" ui-options="dataTableOpt">
                <p>{{quizdata}}</p>
                <thead>
                    <tr>
                        <th>S.No.</th>
                        <th>syllabus</th>
                    </tr>
                </thead>
                <tbody>
                    <tr ng-if="n.id!=1" ng-repeat="n in quizdata">
                        <td class="rowquiz">{{$index+1}}</td>
                        <td class="rowquiz">{{ n.syllabus_id }}</td>
                        </td>
                    </tr>
                </tbody>
            </table>
            <!-- /.form group -->
        </div>
        <!-- /.box-body -->
    </div>
</div>