BackboneJS - Sync Backbone.emulateJSON


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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>
<html>
   <head>
      <title>Sync 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">
      
         //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 us carry out the following steps to see how the above code works −

  • Save the above code in the backbone-emulatejson.htm file.

  • Open this HTML file in a browser.

backbonejs_sync.htm
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