BackboneJS - Router Extend

Description

It extends the backbone's router class and creates a new constructor which inherits from the Backbone.Router.

Syntax

Backbone.Router.extend(properties, classProperties)

Parameters

properties − It provides instance properties for the router class.
classProperties − The class properties are attached to the router's constructor function.

Example

Live Demo

<!DOCTYPE html>
<html>
   <head>
      <title>Router 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">
         //'RouteMenu' is a name of the view class
         var RouteMenu = Backbone.View.extend ({
            el: '#routemenu',  //'el' defines which element to be used as the view reference

            //defines a click event to occur on link
            events: {
               'click a' : 'onClick'
            },

            //After clicking on a link, router calls 'navigate' to update URL
            onClick: function( e ) {
               router.navigate('/');
            }
         });

         //'Router' is a name of the router class
         var Router = Backbone.Router.extend ({

            //The 'routes' maps URLs with parameters to functions on your router
            routes: {
               'route/:id' : 'defaultRoute'
            },
         });

         //'routemenu' is an instance of the view class
         var routemenu = new RouteMenu();

         //It starts listening to the routes and manages the history for bookmarkable URL's
         Backbone.history.start();
      </script>
      
   </head>
   <body>
      
      <section id = "routemenu">
         <ul>
            <li> <a href = "#/route/1">route 1 </a> </li>
            <li> <a href = "#/route/2">route 2 </a> </li>
            <li> <a href = "#/route/3">route 3 </a> </li>
         </ul>
      </section>
      
   </body>
</html>

Output

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

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

NOTE − The above functionality is related to the address bar. So, when you open the above code in the browser, it will show as follows.

Click here for the demo

backbonejs_router.htm