idAttribute

优质

小牛编辑

140浏览

2023-12-01

描述 (Description)

它为我们提供了模型的唯一标识符，其中包含将用作id的类成员的名称。

语法 (Syntax)

model.idAttribute

例子 (Example)

<!DOCTYPE html>
   <head>
      <title> Model Example</title>
      <script src = "https://code.jquery.com/jquery-2.1.3.min.js" type = 
         "text/javascript"></script>
      <script src = "https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" 
         type = "text/javascript"></script>
      <script src = "https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" 
         type = "text/javascript"></script>
      <script type = "text/javascript">
         var  Person = Backbone.Model.extend({
            defaults: {
               idAttribute: 'id'
            }
         });
         var person = new Person({id:5, name:"xnip"});
         document.write("<b>Unique indentifier of Model Person is:</b> ", 
            person.idAttribute);
      </script>
   </head>
   <body></body>
</html>