Persevere is a server-side JavaScript framework that we started several years ago to help build RESTful web applications with clean separation of concerns, encapsulation, and the consistency of JavaScript in both client and server. Recently, we had the opportunity to work on a project that used the full capabilities of Persevere, leveraging many of its features and leading to some improvements as well. We wanted to share some insights on how to best leverage some of the unique features of Persevere.

• JavaScript
• Node.js
• Open Source
• Persevere

It is becoming increasingly popular to deploy Node.js-based applications to Node-friendly hosting services to take advantage of the pre-built, reliable, robust architecture and infrastructure these services provide. Persevere, a JavaScript server framework for developing RESTful applications on Node.js, is an excellent fit for these types of hosting services. In this post I will show you how easily a Persevere application can be built and deployed on one such service, Heroku, but the process can be easily replicated on other providers that offer similar functionality.

• JavaScript
• Persevere

Dojo has an API for Comet-style real-time communication based on the WebSocket API. WebSocket provides a bi-directional connection to servers that is ideal for pushing messages from a server to a client in real-time. Dojo’s dojox/socket module provides access to this API with automated fallback to HTTP-based long-polling for browsers (or servers) that do not support the new WebSocket API. This allows you start using this API with Dojo now.

• comet
• Cometd
• Dojo
• Persevere

We have been providing JavaScript and Dojo support to freelancers, start-ups and Fortune 500 companies for nearly a decade. As we intently watch enterprise organizations everywhere begin to roll out AMD (read about why AMD matters) and the associated code improvements, we are thrilled with the industry’s direction toward toolkit interoperability! Why? Because! Our masterful engineering team, consisting of influential members of various open source communities, positions SitePen perfectly to offer full-on, front-end web development support to the world!

Getting right to the point, (The Official Point!), we are pleased to announce the expansion of SitePen Support to officially include more than fifteen popular open-source JavaScript toolkits!

Now supporting the following JavaScript toolkits:

In addition to toolkits, we will continue to support your custom JavaScript source code, as well as key underlying technologies and formats, including JSON, HTML5, WebSockets, SVG/Canvas, Mobile Web, Server-Side JavaScript, AMD, Node.js and many more.

Our expertise with Dojo and advanced JavaScript is relevant for a wide-range of desktop and mobile web application projects and our approach to SitePen Support has always been flexible with the priority being to improve our customers’ web apps. We strive to support our customers in every way possible and we continue to be Dojo experts. In addition, we’re now committed to providing your organization with the front-end development expertise that will optimize your application regardless of which toolkits and technologies your company is comfortable using. You have our word!

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• ajax
• AMD
• Cometd
• CommonJS
• dgrid
• Dojo
• HTML5
• JavaScript
• Node.js
• Open Source
• Performance
• Persevere
• Support

ComposeJS is a JavaScript package/module for object-oriented programming available in the Dojo Foundation package repository. JavaScript itself is already a highly object-oriented programming language, and the prototype-based inheritance system is very powerful. Rather than simply porting a “class” system from another language, the core philosophy of ComposeJS is to leverage JavaScript paradigms and enhance it with clean, terse syntax and modern composition and resolution concepts for simple, high-performance, and robust object constructors. ComposeJS uses concepts from class inheritance, multiple inheritance, mixins, traits, and aspect-oriented programming to compose functionality in the most efficient manner possible.

• Dojo
• JavaScript
• Persevere

The new Dojo Foundation Package repository is an easy and powerful new way to host Node packages for installation with NPM. This new repository allows you to directly link packages to git repositories and it works with NPM without changes. Developing a Node package couldn’t be easier. Simply submit your package URL to the repository, and instantly it will be available for installation for NPM! Not only that, but you never have to resubmit version updates. Since the package repository is linked to git, any new version tags that you create on your github package repository will automatically be reflected as a new package version available for NPM installation. NPM does not need to be reconfigured at all, just run install like you would with any other package:

npm install my-new-package

When you have updates for your package that you want to designate as a new version, simply tag it in Git. And that’s it! Next time your package is installed or upgraded the newest version will be there.

• Dojo
• JavaScript
• Node.js
• Persevere

Dojo (core) and Dijit 1.6 have been refactored to follow the proposed CommonJS AMD API.

Module Compatibility

Dojo modules are now completely compatible with:

• RequireJS
• Nodules, a Persevere sub-project for Node.js package and module handling
• Backdraft Framework, the leading candidate for the future Dojo module loader
• other AMD-compatible module loaders

Flexibility, Performance, and Stack Traces

This refactoring gives Dojo excellent flexibility going forward, to support both legacy synchronous loading mechanisms, as well as new asynchronous script-tag based loading that provides significant performance boosts and debugging improvement (including real stack traces!).

• CommonJS
• Dojo
• JavaScript
• Persevere

We’ve been interested in Comet for a long time, dating back to the days of mod_pubsub and early talks on event-driven user interfaces. Now, with the arrival of WebSockets in WebKit-based browsers, and expected in Firefox 4.x and Internet Explorer 9 once the next WebSockets specification draft is completed, and with Comet techniques used by many of the world’s most popular sites, Comet has arrived as a viable necessity for rolling-out real-time capabilities for your web applications.

• comet
• Dojo
• Persevere

Data querying is a critical component of most applications. With the advance of rich client-driven Ajax applications and document oriented databases, new querying techniques are needed, and Resource Query Language (RQL) defines a very simple but extensible query language specifically designed to work within URIs and query for collections of resources. The NoSQL movement is opening the way for a more modular approach to databases, and separating out modeling, validation, and querying concerns from storage concerns, but we need new querying approaches to match more modern architectural design.

• CommonJS
• Dojo
• JavaScript
• Persevere

Dojo 1.6 introduces a new API for Comet-style real-time communication based on the WebSocket API. WebSocket provides a bi-directional connection to servers that is ideal for pushing messages from a server to a client in real-time. Dojo’s new dojox.socket module provides access to this API with automated fallback to HTTP-based long-polling for browsers (or servers) that do not support the new WebSocket API. This allows you start using this API with Dojo now.

• Cometd
• Dojo
• Persevere