angularjs ng-repeat以空开头

Question

在角度js中，第一个值应为emty

<thead>
    <tr ng-repeat="(key, value) in reports">
        <th>&nbsp;</th>
        <th ng-if="$parent.$index==0" ng-repeat="data in value">{{$index+1}}</th>
    </tr>
</thead>

如何将第一个值从第二个<th>

添加为空循环开始

Answer 1

使用$first检查当前项目是否是集合中的第一项：

angular.module('app', [])
  .controller('ctrl', function($scope) {
    $scope.reports = {
      first: 1,
      second: 2
    };
  });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
  <table>
    <thead>
      <tr ng-repeat="(key, value) in reports">
        <th ng-if="$first">&nbsp;</th>
        <th ng-if="!$first">{{key}}</th>
      </tr>
    </thead>
  </table>
</div>