如何在AngularJS ngInputTags中调用删除标记的函数

<div ng-repeat="tag in tags">
  <span>{{tag}}</span>
  <button ng-click="deleteTag(tag)">删除</button>
</div>

$scope.tags = ['标签1', '标签2', '标签3'];

$scope.deleteTag = function(tag) {
  var index = $scope.tags.indexOf(tag);
  if (index !== -1) {
    $scope.tags.splice(index, 1);
  }
};

angular.module('myApp', ['ngInputTags'])
  .controller('myController', ['$scope', function($scope) {
    // 控制器代码
  }]);

<div ng-controller="myController">
  <input ng-model="newTag" ng-enter="addTag()" placeholder="输入标签">
  <div ng-input-tags ng-model="tags"></div>
</div>