如何修复未捕获的TypeError:无法读取属性' prototype'的未定义? [英] How to fix Uncaught TypeError: Cannot read property 'prototype' of undefined?

问题描述

我有一个小问题.我正在使用bone.js.我像示例中那样编写了这段代码:

I have a little problem. I'm using backbone.js. I wrote this code like in example:

<script>
$(document).ready(function () {
    window.App = {
        Views: {},
        Models: {},
        Collections: {}
    }

    App.Collections.Users = Backbone.Collection.extend({
         model: App.Models.User,
         url: 'service'
    });
    App.Models.User = Backbone.Model.extend({});

    App.Views.App = Backbone.View.extend({
         initialize: function() {
             console.log( this.collection.toJSON() );
         }
    });

});
</script>

比我启动服务器还要在浏览器控制台中键入以下内容:

Than I started server and in browser console type this:

var x =new App.Collections.Users();
x.fetch()

这将导致错误:Uncaught TypeError: Cannot read property 'prototype' of undefined.但是存在数据以作为响应.图片中的详细信息.如何解决这个问题? 谢谢您的回答.

And this follows to error: Uncaught TypeError: Cannot read property 'prototype' of undefined. But data is present in response. Details in picture. How to fix this? Thanks for you answers.

推荐答案

我修复了此错误.问题是我先创建了集合，然后创建了模型.集合使用用户模型作为工作单元，但是当我定义此集合时，我没有定义模型.

I fixed this bug. The problem was that I created Collection and then the Model. Collections use user model, as working unit, but when I defined this Collection, I did not define Model.

因此，如果要避免此错误，请先定义一个模型，然后再定义集合.

So, if you want to avoid this bug, firstly define a Model and only then define the Collection.

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