Javascript 如何初始化AngularJS中另一个数组元素内的数组元素？

“comments:[]”数组不工作。当我尝试.push（）函数时，它不起作用。但是，当我尝试在其他元素（如标题、用户等）上使用push（）时，它就会起作用

$scope.pictures=[
    {
        name:"/images/profile2.jpg",
        caption:"Food and Hunger",
        votes:0,
        User:"xyz@gmail.com",
        comments:[],
        theme:$scope.theme
    },
    {
        name:"/images/profile3.jpg",
        caption:"The wedding day",
        votes:0,
        User:"yamini@gmail.com",
        comments:[],
        theme:$scope.theme
    },
    {
        name:"/images/profile4.jpg",
        caption:"Mother's Care",
        votes:0,
        User:"fakeid@yahoo.com",
        comments:[],
        theme:$scope.theme
}];

---

有人能帮我解决这个错误吗？

我已经试过你在问题中提到的方法，效果很好。看看你是否也这样做了

html:

$scope.addcomment=function (index) {
    var com=$window.prompt('Please enter your comment');
    $scope.pictures[index].comments.push(com);
}

---

“错误”？什么错误？您面临什么错误，您能检查一下$scope.pictures[index].comments的类型吗？comments是一个数组？运行

addcomment

时，控制台上是否显示任何错误？尝试

console.log（）

对象以检查其是否符合预期。它工作正常，您需要动态地传递索引或manually@SusheelSingh是的，这是我的版本，只是因为我发了一个帖子，而不是因为SusheelSingh的版本有问题：请在这里评论我的错误，而不是简单地否决投票。阅读规则

<div data-ng-app="myApp" data-ng-controller="myCtrl">
    <div data-ng-repeat="pic in pictures">
        {{pic.comments | json }} <button ng-click="addcomment($index)">add comment</button>
    </div>
</div>

(function() {
    var app = angular.module('myApp',[]);
    app.controller("myCtrl", function($scope,$window) {
        $scope.pictures=[
        {
            name:"/images/profile2.jpg",
            caption:"Food and Hunger",
            votes:0,
            User:"xyz@gmail.com",
            comments:[],
            theme:$scope.theme
        },
        {
            name:"/images/profile3.jpg",
            caption:"The wedding day",
            votes:0,
            User:"yamini@gmail.com",
            comments:[],
            theme:$scope.theme
        },
        {
            name:"/images/profile4.jpg",
            caption:"Mother's Care",
            votes:0,
            User:"fakeid@yahoo.com",
            comments:[],
            theme:$scope.theme
        }];
        $scope.addcomment=function (index) {
            var com=$window.prompt('Please enter your comment');
            $scope.pictures[index].comments.push(com);
        }
    });
})();