javascript - 当动态键值为数组时，如何使用 ng-repeat

Question

在我的 Controller 中，我有这样的数据......

    data = {
        chartTypes":["pie","donut","bar","line"],
        "features":{
            "stacked": ["true","true","true","false"],
            "percentage":["false","false","true","false"]
         }
    };

$scope.docStructure = data

有什么方法可以让我使用 ng-repeat 遍历键并在值是数组时再次迭代？

<div ng-app="chartFeatures" ng-controller="chartFeaturesCtrl" style="height:200px; background:red;">
        <table width="100%" border="0" cellpadding="0" cellspacing="0">
        <tr>
            <th>&nbsp;</th>
            <th ng-repeat="chartType in docStructure.chartTypes">{{chartType}}</th>
        </tr>
        <tr ng-repeat="(feature,supportedList) in docStructure.features">
            <td>{{feature}}</td>
            <td ng-repeat="supported in supportedList">{{supported}}</td>
        </tr>

        </table>
    </div>

我的想法是我想做一个交叉表，如下所示。

例子:

Answer 1

你只需要在 td 标签的 ng-repeat 中添加 track by $index

<td ng-repeat="supported in supportedList track by $index">{{supported}}</td>

这是一个 demo

您还可以将“特征”数组转换为包含对象而不是基元，这样您就不需要track by $index

这是一个 demo