SitePen: Creating and Enhancing Dojo Classes

By  on  

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!

Recent Features

  • By
    5 More HTML5 APIs You Didn’t Know Existed

    The HTML5 revolution has provided us some awesome JavaScript and HTML APIs.  Some are APIs we knew we've needed for years, others are cutting edge mobile and desktop helpers.  Regardless of API strength or purpose, anything to help us better do our job is a...

  • By
    Creating Scrolling Parallax Effects with CSS

    Introduction For quite a long time now websites with the so called "parallax" effect have been really popular. In case you have not heard of this effect, it basically includes different layers of images that are moving in different directions or with different speed. This leads to a...

Incredible Demos

  • By
    pointer Media Query

    As more devices emerge and differences in device interaction are implemented, the more important good CSS code will become.  In order to write good CSS, we need some indicator about device capabilities.  We've used CSS media queries thus far, with checks for max-width and pixel ratios.

  • By
    Create a Sheen Logo Effect with CSS

    I was inspired when I first saw Addy Osmani's original ShineTime blog post.  The hover sheen effect is simple but awesome.  When I started my blog redesign, I really wanted to use a sheen effect with my logo.  Using two HTML elements and...

Discussion

  1. 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

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!