Backbone.js collection.parse()

The Backbone.js parse method is called whenever a model's data is returned by a server. The collection's data is returned by passing through the response object and data is returned in JSON format.

Syntax:

Parameter explanation:

response: It specifies the array of model attributes to the collection.

options: It represents the data in JSON format if it is set to true.

Let's take an example to demonstrate the parse method.

See this example:

 <!DOCTYPE html>
   <head>
      <title>Parse 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">
         //'MyModel' is a model name and  extended using the Backbone.Model class
         var MyModel = Backbone.Model.extend();

         // The variable 'myData' contains the values which are need to be parsed in the collection
         var myData ={
            "values": [{
               "fname": "Saurav",
               "lname": "Ganguly",
               "country": "India"
            }]
         };

         //'MyCollection' is a collection name
         var MyCollection = Backbone.Collection.extend({
            model: MyModel,   //The model 'MyModel' is specified by overriding the 'model' property
            parse : function(response, options){
               document.write(JSON.stringify(response));
            }
         });

         //The collection instance 'myCollection' extracts the values of 'myData'only if parse is set to true
         var mycollection = new MyCollection(myData, { parse: true });
      </script>
   </body>
</html>

Test it Now

Output:

Save the above code in parse.html file and open this file in a new browser.