angularJS实现动态添加,删除div方法

要实现的功能类似下图，动态添加或者删除div

点击 增加可添加一条div 点击删除可删除一条div

HTML代码如下：（省略CSS样式代码了大笑）

<div class=\"accordion-inner\">
  <div class=\"alert alert-info fade in\" ng-repeat=\"permission in permissions\">授权给:
    <select id=\"\" class=\"grantees\" disabled=\"\" style=\" margin-bottom: 3px;\" ng-model=\"permission.grantee\">
      <option value=\"everyone\">所有人</option>
      <option value=\"authenUsers\">已认证的用户</option>
      <option value=\"me\" selected=\"\">我自己</option>
    </select>
    <input type=\"checkbox\" checked=\"\" class=\"permissions\" disabled=\"\" ng-model=\"permission.port1\">Open/Download
    <input type=\"checkbox\" checked=\"\" class=\"permissions\" disabled=\"\" ng-model=\"permission.port2\">View Permissions
    <input type=\"checkbox\" checked=\"\" class=\"permissions\" disabled=\"\" ng-model=\"permission.port3\">Edit Permissions
    <button class=\"btn\" type=\"button\" style=\"float: right;\" ng-click=\"delPermission($index)\">删除</button>
  </div>
  <div>
    <button class=\"btn\" type=\"button\" ng-click=\"addPermission($index)\">增加访问许可</button>
  </div>
  <br>
  <div>
    <button class=\"btn btn-primary\" type=\"button\">保存</button>
    <button class=\"btn\" type=\"button\">取消</button>
  </div>
</div>

添加和删除的JS代码分别如下：

//增加许可访问div
$scope.permissions = [{grantee: \"\",port1:\"\",port2:\"\",port3:\"\"}];
$scope.addPermission = function($index){
  $scope.permissions.splice($index + 1, 0,
    {grantee:\"\", port1:\"\",port2:\"\",port3:\"\"});
}
//删除许可访问div
$scope.delPermission = function($index){
  $scope.permissions.splice($index, 1);
}

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