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With the rise of HTML5 and the huge advancement in Javascript performance and APIs in modern browsers, single page applications are now more popular than ever. 
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We are going to take a look at a simple Twitter application that gets the tweets from a specific username. Why Twitter? Well, the Angry Birds have a special relationship with Twitter, especially the Blue Bird ;)
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Creating, testing and maintaining a large JavaScript code base is not easy, especially since great resources on how to do this are hard to find. Superhero.js is a collection of the best articles, videos and presentations on creating, testing and maintaining large JavaScript applications. This page is a continously updated list of articles that help explain the syntax of JavaScript, how to organize your projects, how to test your code, and what’s on the horizon. Have fun!
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From
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The WebSocket protocol is a web technology providing full-duplex communications channels over a single TCP connection. In this tutorial, we will explore the basics of how the protocol works, and explore the tools necessary to begin building real-time web applications without the use of browser plugins and the HTTP protocol. We will also build a JavaScript Class that will get you started building an Object Oriented library for using WebSocket within your application.
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After five minutes thinking about hang up my boots (well my mouse ) and become a boring Project Manager, I decided to give a second try to HTML / JS, and check if there were any good changes in all this time, I found that: The JavaScript community is amazing and it’s constantly evolving, there are great libraries available and they have really got the concept of open source.It does not fully depend on big software vendors.Same principles apply: it is possible to decouple user interface from business logic, it’s possible to apply a pattern like MVVM, it’s possible to use declarative binding, it’s possible to implement real life unit testing...Trying to develop in a good way implies a big learning curve.There’s no silver bullet, we must remain as polyglot programmers.One of the things that I missed it’s a guidance to migrate knowledge stack from a Silverlight Developer point of view. At this point it’s were I decided to comment the idea about writing a JavaScript article to the SilverlightShow chaps, and they bravely accepted the challenge , if you like this article probably more like this will be published in the near future.
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Talk given at HTML5DevConf on April 1, 2013. (Sane Async Patterns in JavaScript http://t.co/QVyL6ebBEd)
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Brendan Eich claims that hiring him to embed the Scheme language, might actually have been a “bait and switch operation”. But at that point in time Netscape was also negotiating with Sun to embed Java in the browser. Note that JavaScript was for embedding in HTML while Java was for embedding in the Browser. The idea was that Java would be used for component development while JavaScript would be used for lightweight scripting within HTML. We don't know what actually transpired, but the orders from above to Brendan where clear. The new scripting language must “look like Java” and must be “object based”. Any hopes Brendan might have harboured for Scheme, where now out of the window. We will see why.
Jan Hesse's insight:
There are more than only this post, check out all his blog if you want to get the most out of JS.
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I am walking through Durandal JS in this video, showing some of the routing behavior and other attributes that are indicative of a client side MVC type of fr...
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One of the main features in Silverlight is binding. There are two ways you do data binding. ‘One way’ or ‘two way’ data binding. There is one more ‘onetime’, I am skipping it on purpose here. Let’s...
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In this post we will take a look at the Black Bird who will use the organized approach of the Backbone.js bomb to fight these porkers. Slowly, one by one, the birds will take back what it theirs to keep!
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While the allure of writing applications - and not just web sites - in HTML5 and JavaScript reaches a lot of developers, we've experienced that a number of developers are rather frightened by the idea of creating large applications in a dynamic language. In addition to the dynamic nature of JavaScript, the lack of a container-based GUI framework (which isolates causes and effects to individual controls, as it is done in the .NET Framework) and the general overarching flexibility and lack of guiding principles didn't make this environment too appealing for a lot of business developers.
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Increase in usage of JavaScript in modern applications demand developers to write maintainable code, separate concerns and improve testability. JavaScript is a “class” less language and it was not designed to support Object Oriented Programming, however you can achieve similar results by workarounds. So if you are a developer from an Object Oriented Programming world, then you will find it hard until you get used to it. Though there are some DOM manipulation libraries like jQuery which simplifies client side scripting of HTML, they actually do not solve the problem of effectively handling separation of concerns. You will end up writing lot many jQuery selectors and callbacks to keep the data in sync between the HTML, JavaScript and the data fetched from the server and we’re still stuck with the Spaghetti code. Fortunately there are a few libraries and frameworks that come to rescue. Let’s explore few concepts and libraries that assist in structuring JavaScript applications!
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It’s fairly common these days to think of JavaScript as a sort of “assembly language for the web”. After all, it’s the language that is natively supported by web browsers, making it the most widely...
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Seamless javascript code coverage. Easy to install, easy to configure, easy to use on client side and node.js. Blanket.js is an open source project created by Migrii Team.
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Marionette and Chaplin are frameworks on top of the popular Backbone.jslibrary. Both seek to ease the development of single-page JavaScript applications. In such applications, the client performs tasks that were typically performed on the server, like rendering raw data into HTML. Backbone is designed as a minimalist library instead of a full-featured framework. My experience has shown that Backbone can only provide the foundation of a JavaScript application architecture. Both Marionette and Chaplin arose because Backbone is providing too little structure for real-world apps. They respond to the same problems. So there are a lot of similarities between the two – perhaps more than differences.
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We will cover here some of the key concepts of JavaScript to get us started. If you have not checked JavaScript for the past few years or if you are new to JavaScript, I hope you find this useful. We will start by covering the language basics like variables, functions, scope, and the different types, but we will not spend much time on the absolute basics like operators, or what is a function or a variable, you probably already know all that as a developer. We will discover JavaScript by going through simple examples and for each of these, highlight specific behaviors and approach the language from an interactive developer standpoint, coming from other technologies like Flash (ActionScript 3), Java, C# or simply native (C++).
Jan Hesse's insight:
An extensive deep-dive for programmers who want to widen theirs horizon
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EmotiCODE is a collaborative source code snippets aggregator and search engine but mostly a place where developers can find the answersthey are searching for and contribute with their own contents to help others with the same needs.
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Introduction In the not too distant past the primary tool available to JavaScript programmers for handling asynchronous events was the callback.
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A presentation from the Sprint 2013 HTML5 DevConf; some parts probably more illuminating when accompanied by the speaker's discussion. However, Slide #19 has a zippy summary of variable hoisting scenarios. The bad news: ECMAScript 6 won't be cross-browser for a while. The good news: it'll add block-level scoping.
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In my introductory article, I went over the basics of the Ember.js framework, and the foundational concepts for building an Ember application.
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CoffeeScript is a little language that compiles into JavaScript. Underneath all those awkward braces and semicolons, JavaScript has always had a gorgeous object model at its heart. CoffeeScript is... Via William delmas
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In Silverlight, we use Commands to do clean separation of View and ViewModel. If we were not using commanding, we will end up creating code behind code to handle the events fired by the controls an...
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I like the Single Page Application model and Backbone.js, because I get it. As a former Java developer, I am used to object oriented coding and events for messaging. Within our HTML5 consultancy, SC5, Backbone has become almost a synonym for single page applications, and it is easy to move between projects because everybody gets the same basic development model. We hate the fact that we need to have server side workarounds for robots. Making applications crawlable is very reasonable business-wise, but ill-suited for the SPA model. Data-driven single page applications typically get only served a HTML page skeleton, and the actual construction of all the visual elements is done in browser.
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RT @asehmi: Continuously test this continuously deployed ebook! henriquat.re - AngularJS for .NET Developers http://t.co/mU9SdsmXC8. #thinktecture
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