Backbone无法启动？

Question

我开始使用backbone.js ......但根本无法使用它.

 <script src="Libraries/jquery.min.js"></script>
 <script src="Libraries/backbone.js"></script><script src="Libraries/Underscore.js"></script>

 <script>
   $(function(){    
 window.Todo = Backbone.Model.extend({
       });
  });
 </script>

在Chrome上,错误日志显示:无法调用undefined的方法'extend'并且由Backbone.Model.extend启动...为什么？谢谢

Answer 1

你需要首先加载Underscore,因为Backbone依赖它(你不能在没有引擎的情况下开车) - 试试:

<script src="Libraries/jquery.min.js"></script>
<script src="Libraries/Underscore.js"></script>
<script src="Libraries/backbone.js"></script>

另外,为了安全起见,将所有内容放在窗口"加载"功能中以确保所有内容都已加载 -

$(document).ready(function() {
    // Stuff to do as soon as the DOM is ready;
});