BackboneJS - Model Has

Description

This method returns true if the attribute is set to a non-null or non-undefined value.

Syntax

model.has(attribute)

Parameters

attribute − An attribute defines the property of a created model.

Example

Live Demo

<!DOCTYPE html>
<html>
   <head>
      <title> Model 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 Company = Backbone.Model.extend();
         var company = new Company();

         company.set({ Name: "TutorialsPoint", comp_site:"www.tutorialspoint.com"});
         if(company.has('comp_site')) {
            document.write("The model Company has site: True");
         } else {
            document.write("The model Company has site: False");
         }
      </script>
      
   </head>
   <body></body>
</html>

Output

Let us carry out the following steps to see how the above code works −

Save the above code in the has.htm file.
Open this HTML file in a browser.

backbonejs_model.htm