使用Backbone.sync持久化一个集合的状态到服务器。
语法
collection.sync(method, collection, options)
参数:
- method: 表示CRUD操作，如创建，读取，更新和删除。
- collection: 包含设置模型来保存数据的收集。
- options: 激发成功或错误消息取决于方法成功。
示例
<!DOCTYPE html> <head> <title>Collection 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"> //The sync() method reads and fetches the model data Backbone.sync = function(method, model) { document.write("The state of the model is:"); document.write("<br>"); //The 'method' specifies state of the model document.write(method + ": " + JSON.stringify(model)); }; //The 'myval' is collection instance and contains the values which are to be fetched in the collection var myval = new Backbone.Collection({ site:"zaixian", title:"Simply Easy Learning..." }); //The myval.fetch() method display the model's state by delegating the sync() method myval.fetch(); </script> </body> </html>
输出
让我们进行以下步骤来看看上面的代码工作：
-
保存上述代码在文件sync.html
-
在浏览器打开这个HTML文件。