TypeError:无法读取未定义的JavaScript属性'push'

Question

我正在使用此Angular项目,用户提交评论表单,新评论将添加到已发布的评论中.这是我的代码.

.controller('productCtrl', function($scope, $http, $routeParams, Page){
$scope.product = {};
$scope.review = {};
$scope.comments = {};

routeparm = $routeParams.param;

$scope.review = function(){
    var review_box = $scope.review_form.review_box;

    $http.post('./comment.php', {
        comment : review_box,
        code: routeparm
    })

    .success(function(data){
            $scope.comments.push(data.comments);
            $scope.review.review_box = '';
    })

    .error(function(data){
        $scope.has_error = true;
        $scope.error_message = data;
    })

};

但是,当我尝试添加注释时,我收到以下错误.

TypeError: Cannot read property 'push' of undefined

我已经定义了一个空的$ scope.comments = {}; 那我为什么会收到这个错误呢？我该如何解决？谢谢

Answer 1

您声明的注释是一个Object.只需将声明更改为数组,

从:

$scope.comments = {};

至:

$scope.comments = [];

编辑: 如果你需要推送新对象,你需要像这样将你的注释作为对象数组并推送新的对象

$scope.comments = { 
    1: {name:'',review:'',comment:'',uptime:'',gravatar:''}
}

 $scope.comments.push({name:'rukshi', review:'test comment',comment:'yet another comment',uptime:'',gravatar:''});