Question

我正在尝试根据ng-click动态访问该对象。我将使用这样的按钮来创建很多表单。

HTML

<button type="button" id="news" ng-click="home.addnew()">Update</button>
<button type="button" id="allocation" ng-click="home.addnew()">Update</button>
<button type="button" id="create" ng-click="home.addnew()">Update</button>

我的对象

"home": {
    "news": [{
        "type": "cd",
        "title": "title1",
    }],
    "allocation": [{
        "type": "cd",
        "title": "title2",
    }],
        "create": [{
        "type": "cd",
        "title": "title3",
    }]
    .......etc
}

Angularjs控制器

$scope.home.addnew = function(){
    var type = $(event.target).attr("id");
       $scope.home.news.title; // Here how can I access that "news","allocation","create" Dynamically
       $scope.home.type.title // I have tried like this 
}

我收到错误

Cannot read property 'title ' of undefined

Answer 1

您尝试访问对象属性而不是数组。

看起来应该是这样的

$scope.home.addnew = function(){
    var type = $(event.target).attr("id");
    $scope.home[type][0].title; 
}

Answer 2

您确定已将已作为已评论用户之一附加到$ scope的主页。在开始处理之前，$ scope.home需要存在。

Answer 3

您可以使用数组括号

 var dynamicType ='news'; 
                var obj ={"home": {
                "news": [{
                "type": "cd",
                "title": "title1",
                }],
                "allocation": [{
                "type": "cd",
                "title": "title2",
                }],
                "create": [{
                "type": "cd",
                "title": "title3",
                }]
            }};
    console.log(obj.home[dynamicType][0].title);

如何在angularjs中动态访问对象？

3 个答案: