在angular/javascript中按索引而不是按创建顺序删除对象

我命名为touts的对象将按创建顺序删除,而不是按id删除

调用删除它们的函数 deleteTouts()

这是一个实时代码:

jsFiddle link

HTML格式

<div ng-app="App">
  <div ng-controller="Controller" class="container">
    <button ng-click="addFields()">
          Add Field
    </button>
        <hr />
        <hr />
    <div class="row" ng-repeat="(keyField, keyVal) in fields">
        <input   ng-hide="true" value="field" ng-model="field.id" />
         <div>{{keyVal.id}} -- <span><a href="" ng-click="removeFields($index)">delete</a></span></div> 

         <div class="" ng-repeat="(keyTout, valTout) in fields[keyField].touts">

             <div class="captions">
                 <input value="field"  ng-model="valTout.caption" />
                 <input value="field"  ng-model="valTout.subCaption" />
                 <br/>
             </div>
             <button ng-click="deleteTouts(keyTout)">delete tout</button>       
        </div>
        <button ng-click="addTouts(keyField)">add tout</button>
            <hr />
    </div>

    <hr />
    <p class="well">fields: {{fields | json}}</p>
  </div>
</div>

JS文件

angular.module('App', []);

function Controller($scope) {
    $scope.friends = [];
    $scope.fields = [ 
        //'id': 0, touts: [{'caption': 'default caption', 'subCaption': 'default subcaption'}]
    ];


    $scope.addFields = function() {
       var idFields = $scope.fields.length == undefined ? 0 : $scope.fields.length ; 

       $scope.fields.push({id: idFields, touts: [{'caption': 'default caption', 'subCaption': 'default subcaption'}]});
    };
    $scope.removeFields = function(id) {

        $scope.fields.splice( $scope.fields.indexOf(id), 1 );
    };

    $scope.addTouts = function (id) {
        //alert(id);
        $scope.fields[id].touts.push({'caption': 'default caption', 'subCaption': 'default subcaption'});
    }
    $scope.deleteTouts = function (id) {
        //alert(id);
       $scope.fields[id].touts.splice( $scope.fields[id].touts.indexOf(id), 1 );
    }
}

方向:

Create 2 fields ->

create 2 touts in field[0] -> 

create 1 tout in field[1]

现在为什么从中删除 field[1]tout[0] 使用 删除tout 它删除了第一次吹捧。

此功能不正确。最后,有没有更好的加减法?(指令)?