Backbone.js model.isNew()

The Backbone.js isNew model determines the state of new. If a model doesn't have an id and is not saved to the server, it is considered to be new.

Syntax:

Let's take an example.

See this example:

 <!DOCTYPE html>
   <head>
      <title> isNew 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>
         <script type="text/javascript">
            var Person = Backbone.Model.extend({
               defaults: {
                  title: 'JavaTpoint'
               }
            });
            var person = new Person();
            document.write(person.isNew());
         </script>
   </head>
</html>

Test it Now

Output:

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