javascript - ngRepeat:dupes在数组中输入null时出错

This question already has answers here:

Error: [ngRepeat:dupes] what does this mean?

                                （2个答案）


                5个月前关闭。




如何在javascript数组中输入连续的null？

我无法理解如何在JS数组中输入连续的空值。这是我的工作脚本：

var myApp = angular.module("myApp", []);

myApp.controller("myCtrl", function($scope) {
  $scope.items = [];
  $scope.items[0] = [,,"this doesn't work"];
  $scope.items[0] = [null,"this works"];
  $scope.items[1] = [null,,"this works"];
  $scope.items[2] = [null,null,"this doesn't work"];
  $scope.items[3] = [null,,,"this doesn't work"];
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<body ng-app="myApp">
  <div ng-controller="myCtrl">
    <table>
      <tr ng-repeat="row in items">
        <td ng-repeat="column in row">{{column}}</td>
      </tr>
    </table>
  </div>
</body>

最佳答案

问题在于您如何在角度ng-repeat中使用值。更改代码以使用track by处理重复的值。

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

关于javascript - ngRepeat:dupes在数组中输入null时出错，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/59274539/