extend

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2023-12-01

描述 (Description)

它扩展了Backbone.View类以创建自定义视图类。

语法 (Syntax)

Backbone.View.extend(properties, classProperties)

参数 (Parameters)

properties - 它提供视图类的实例属性。
classProperties - 附加到视图构造函数的classProperties。

例子 (Example)

<!DOCTYPE html>
<html>
   <head>
      <title>View 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>
   </head>
   <body>
      <script type = "text/javascript">
         //'ViewDemo' is a name of the view class
         var ViewDemo = Backbone.View.extend ({
            //This function is called when the view is instantiated
            initialize:function() {
               document.write('Welcome to xnip!!!');
            }
         });
         //'myview' is an instance of the view 'ViewDemo'
         var myview = new ViewDemo();
      </script>
   </body>
</html>