AngularJS:获取md中的选择顺序-选择多个

<div ng-app="myApp" ng-controller="myCtrl">
  <label ng-repeat="item in items">
    <input type="checkbox" ng-model="selectedItems[item]"> {{item}}
  </label>
</div>

angular.module('myApp', [])
  .controller('myCtrl', function($scope) {
    $scope.items = ['item1', 'item2', 'item3', 'item4'];
    $scope.selectedItems = {};

    $scope.getSelectedItems = function() {
      var selected = [];
      for (var item in $scope.selectedItems) {
        if ($scope.selectedItems[item]) {
          selected.push(item);
        }
      }
      return selected;
    };
  });

<div ng-app="myApp" ng-controller="myCtrl">
  <label ng-repeat="item in items">
    <input type="checkbox" ng-model="selectedItems[item]"> {{item}}
  </label>
  <button ng-click="getSelectedItems()">获取选择的值和选择的顺序</button>
  <p>选择的值和选择的顺序：{{selectedItemsArray}}</p>
</div>