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SitePen: Creating and Enhancing Dojo Classes

By David Walsh on July 1, 2010

You have probably noted over the past few months that I've been working a lot with the Dojo Toolkit. SitePen has been kind enough to allow me to guest blog about a Dojo topic I find very interesting: creating and enhancing Dojo classes. From the post:

Like all top-notch JavaScript toolkits, Dojo tries to make its classes as flexible as possible, knowing that users of the toolkit may have different ideas about how a given class or class method should work. Luckily, Dojo provides you a number of methods by which you can subclass or modify existing classes. Let's examine a few ways you can make Dojo classes exactly the way you like.

Click here to check it out!

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Discussion

Bitels

Hi,
Maybe you’ll be able to help me with understanding new way of class definition in new dojo. I’m using latest version of dojo. I try to define a few classes in separate files. Example (js/TwitterManager.js):

require([ "dojo/_base/declare", "dojo/request/script"],
    function( declare, script)
    {
       declare("TwitterManager", script, {
            // The default username
            username: "defaultUser",
            get: function()
            {
                script.get("http://search.twitter.com/search.json", {
                        jsonp: "callback",
                        query: {q: "#dojo"}
                    }).then(function(response){
                        //we're only interested in response.results, so strip it off and return it
                        return response.results;
                    });
            }
        });});

Then I try to instantiate this class in main file (index.html):

require(["dojo/on", "dojo/dom", "dojo/query",  "dojo/mouse", "dojo/domReady!"],
    function(on, dom, query, mouse) {
        var x = new TwitterManager();
        var results = x.get();
});

This code doesn’t work. But when I remove from class definition “request/script” module it works fine. I really need to use “script.get” method in this class. Of course all code might be put in index.html :) but I look for OOP approach in dojo 1.8.

Thanks