BackboneJS-Sync Backbone.emulateJSON

Quiz

Description

It is used to handle the requests encoded with application/json by setting the method to true.

Syntax

Backbone.emulateJSON=true

Example

<!DOCTYPE html>
   <head>
      <title>Sync Example</title>
         <script src="/?originalUrl=https%3A%2F%2Fcode.jquery.com%2Fjquery-2.1.3.min.js" type="text/javascript"></script>
         <script src="/?originalUrl=https%3A%2F%2Fcdnjs.cloudflare.com%2Fajax%2Flibs%2Funderscore.js%2F1.8.2%2Funderscore-min.js" type="text/javascript"></script>
         <script src="/?originalUrl=https%3A%2F%2Fcdnjs.cloudflare.com%2Fajax%2Flibs%2Fbackbone.js%2F1.1.2%2Fbackbone-min.js" type="text/javascript"></script>
   </head>
   <body>
      <script type="text/javascript">
         //If web server that doesn't support Backbone's REST/HTTP approach, then turn on 'Backbone.emulateHTTP'
         Backbone.emulateHTTP = true;

         //If web server can't handle requests encoded as application/json, then set the 'Backbone.emulateJSON' to true
         Backbone.emulateJSON = true;

         //The sync() method reads and fetch the model data
         Backbone.sync = function(method, model) {
            document.write(method + ": " + JSON.stringify(model));
            model.set('id', 1);   //Set the model with id as '1'
         };

         //'Player' is a model name and contains the values to be displayed when you save the model
         var Player = new Backbone.Model({
            fname:"Sachin",
            lname:"Tendulkar"
         });

         //The 'save()' method saves data of the model by delegating to sync() method
         Player.save();

         //When you save the model, it updates the model along with this value
         Player.save({country: "india"});
      </script>
   </body>
</html>

Output

Let's carry out the following steps to see how above code works:

Save above code in backbone-emulateJSON.htm file
Open this HTML file in a browser.

Print Page