ReferenceError：骨幹未定義 - 嘗試使用Parse.com Javascript SDK

我正在嘗試爲學校項目構建網站，iOS應用和Android應用，這需要我有一臺服務器。我決定使用Parse，因爲它是免費的，我已經將它用於iOS應用程序。雖然，我沒有使用Parse的Javascript SDK的經驗。ReferenceError：骨幹未定義 - 嘗試使用Parse.com Javascript SDK

問題：
我已經鏈接的所有需要的庫在我的index.html文件，但是當我啓動了網站，我收到以下錯誤：

ReferenceError: Backbone is not defined.

問：
是什麼導致這個錯誤？我該如何解決它？

從我讀過的SDK構建在Backbone.js之上，我必須鏈接Underscore.js，因爲Backbone.js依賴於它？

的index.html

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
    <meta charset="utf-8"> 
    <meta http-equiv="X-UA-Compatible" content="IE=edge"> 
    <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1"> 
    <!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags --> 
    <title>TutorMe - Home</title> 

    <!-- Bootstrap --> 
    <link href="./bootstrap-3.3.5/css/bootstrap.min.css" rel="stylesheet"> 

    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries --> 
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// --> 
    <!--[if lt IE 9]> 
     <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script> 
     <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> 
    <![endif]--> 

    <link href="./css/index.css" rel="stylesheet"> 

    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script> 
    <script type="text/javascript" src="http://www.parsecdn.com/js/parse-1.5.0.min.js"></script> 

</head> 

<body> 

    <script type="text/javascript" src="./app/models/database.js"></script> 

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) --> 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"> </script> 
    <!-- Include all compiled plugins (below), or include individual files as needed --> 
    <script src="./bootstrap-3.3.5/js/bootstrap.min.js"></script> 
</body> 

</html>

database.js

Parse.initialize("X", "X"); 

    var Student = Backbone.Model.extend({ 

    }); 

    var StudentList = Backbone.Collection.extend({ 
    model: Student 
    }); 

    var StudentListController = Backbone.View.extend({ 

    initialize: function() { 
    } 
    });

編輯：

如果我Backbone.js的鏈接，我得到了以下錯誤：

[Error] TypeError: undefined is not an object (evaluating 'i.extend') 
    (anonymous function) (backbone-min.js, line 1) 
[Error] ReferenceError: Can't find variable: Backbone 
    global code (database.js, line 3)

代碼：

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.2.2/backbone-min.js"></script>

來源

2015-08-28 Jonathan

強調JS，卻忘了骨幹JS在你提供的代碼中。 –

@JSantosh，當我鏈接主幹時，我得到另一個錯誤以及原始錯誤。請看我更新的問題。 – Jonathan

看起來就像你不掛你的backbone.js文件

<script src="/path/to/backbone.js"></script>

或鏈接到CDN您鏈接

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.2.2/backbone-min.js"></script> 
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.2.2/backbone-min.map"></script> 
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.2.2/backbone.js"></script>

來源

2015-08-28 02:29:23 Pindo

當我鏈接主幹時，我得到另一個錯誤以及原始錯誤。請看我更新的問題。 – Jonathan

修正了它。我在underscore.js之前連接backbone.js。吉茲... – Jonathan

ReferenceError：骨幹未定義 - 嘗試使用Parse.com Javascript SDK

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