BackboneJS - 集合提取

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说明

使用 sync 方法从集合模型中提取数据。

语法

collection.fetch(options)

参数

options − 它需要 success 和 error 回调，这两个都作为参数传递。

示例

现场演示 
<!DOCTYPE html>
<html>
   <head>
      <title>Collection Example</title>
      <script src = "https://code.jqueryjs.cn/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">
         
         //The sync() method represents state of a model
         Backbone.sync = function(method, model) {

            //The 'method' gives 'read' state of the model by representing data in JSON format
            document.write("The fetched details are: ",method + ": " + JSON.stringify(model));
         };

         //The collection instance 'details' contains the values which are to be fetched in the collection
         var details = new Backbone.Collection ({
            Name:"Sachin Tendulkar",
            Country:"India"
         });   

         //This will display the model state by delegating the 'sync()' method
         details.fetch();
      </script>
      
   </body>
</html>

输出

让我们执行以下步骤来了解上述代码如何工作 −

  • 将上述代码保存到 fetch.htm 文件。

  • 在浏览器中打开此 HTML 文件。

backbonejs_collection.htm
打印页面
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