Managing Events As Relationships, Not Just References · Los Techies
Managing Events As Relationships, Not Just References 6 February, 2013. It was a Wednesday. In my Scaling Backbone Apps With Marionette talk, I have some slides that deal with JavaScript zombies in Backbone apps. This isn’t a new subject by any means. It is one that I talk about a lot, and spend a lot of time explaining to others. But there is one aspect of this talk and the related material that
Same-Origin Policy とは何なのか。 - 葉っぱ日記
ちょっと凝ったWebアプリケーションを作成していたり、あるいはWebのセキュリティに関わっている人ならば「Same-Origin Policy」(SOP)という言葉を一度は聞いたことがあると思います。日本語では「同一生成元ポリシー」あるいは「同一生成源ポリシー」などと訳されることもありますが、個人的には「オリジン」は固有の概念を表す語なので下手に訳さず「同一オリジンポリシー」と書いておくのが好きです。 さて、この「オリジン」とは何なのかという話ですが、これは「RFC 6454 - The Web Origin Concept」で定められており、端的に言うと「スキーム、ホスト、ポート」の組み合わせをオリジンと定め、それらが同じものは同一のオリジンとして同じ保護範囲のリソースとして取り扱うということです。 例えば、http://example.jp/fooとhttp://example.jp:
What's The Point Of Promises?
By this point in time, just about every JavaScript developer and their grandma has heard about Promises. If you haven't, then you're about to. The idea for promises is laid out in the Promises/A spec by the folks in the CommonJS group. Promises are generally used as a means for managing callbacks for asynchronous operations, but due to their design, they are way more useful than that. In fact, due
JavaScript, Node.js: is Array.forEach asynchronous?
I have a question regarding the native Array.forEach implementation of JavaScript: Does it behave asynchronously? For example, if I call: [many many elements].forEach(function () {lots of work to do}) Will this be non-blocking?
Deploying JavaScript Applications - Alex Sexton
Preface: Nothing in this post is necessarily new, or even anything I thought of first (save for a name or two). However, I’m writing it because I’d like to start building some consistency and naming conventions around a few of the techniques that I am using (and are becoming more common), as well as document some processes that I find helpful. Much of this comes from my experience deploying applic
Firefox 22(Nightly) で ArrowFunction が実装されたが、扱いが難しい - hogehoge @teramako
Firefox Nightly (22) に ES6のArrow Function来たる - fragmentary ということで、早速試しているわけです。 基本 var f1 = () => "OK"; // 引数なしの場合は、"()"が必須 var f2 = arg => arg + 1; // 引数一つなら、"()"は省略可 var f3 = (arg1, arg2) => arg1 + arg2; // 複数の引数の場合は"()"必須 var f4 = arg => { // ステートメントを入れる場合は "{}" でブロックを生成する if (arg) return "OK"; else return "NG"; }; // オブジェクトを返す場合は、ブロックと間違われないように // ({...}) と () 等を使用する var f5 = () => ({ a: "A", b
messenger
Client-side growl-like notifications with actions and auto-retry.1.4.1 Messenger Demo and Usage Show messages in your app. Wrap AJAX requests with progress, success and error messages, and add retry to your failed requests. Add actions (undo, cancel, etc.) to your messages. Messenger is different from other solutions for a few reasons: Each message can be updated after being posted without losing
ECMAScript 6 and Rest Parameter · ariya.io
ECMAScript 6 and Rest Parameter Mar 6, 2013 2 min read #es6 #javascript #web Handling a function with a variable number of arguments is always tricky in JavaScript. At least, we still have this arguments object which can be used to retrieve all arguments used to invoke a function. With the upcoming ECMAScript 6, no such hack is necessary anymore since we can start using its rest parameter feature.
JSHint, a JavaScript Code Quality Tool
Report Cyclomatic complexity Unused variables Undefined variables Warn About == null About debugging code About unsafe for..in About arguments.caller and .callee About assignments if/for/... About functions inside loops About eval About unsafe line breaks About potential typos in logical operators When code is not in strict mode When new is used for side-effects Assume Browser NodeJS jQuery Develo
Headless Functional Testing with Selenium and PhantomJS | Envato Tuts+
Let's build a system for performing functional tests on web applications, using Selenium and PhantomJS. The resulting system will allow us to write easy test scenarios in JavaScript, and test those scenarios both in real browsers and a headless simulator. Choosing Components The obvious downside to Selenium is that it requires a full graphical desktop for any and all tests. To begin, we have to ch
ECMAScript 6 and Object Literal Property Value Shorthand · ariya.io
ECMAScript 6 and Object Literal Property Value Shorthand Feb 28, 2013 2 min read #es6 #javascript #web Constructing an object using the literal syntax is something that is very familiar to every JavaScript developer, quite likely because this reminds everyone of JSON. While every object property needs to be either a key-value pair or getter/setter, this may change in the near future. Another synta
New JavaScript UI Library
I have been using it quite substantially for a number of different projects now and must say that I absolutely love the way it works. - Soteri Panagou I've been using your grid on a couple of small projects and I've got to say it's an awesome piece of work. It's very easy to configure and offers a lot of features while staying really responsive. As a programmer it inspires me to write better code.
Dart: Web Fragmentation vs. Web Development Fragmentation
Remember Dart — that language that Google is developing to replace Javascript? Frankly, I haven’t given it much thought the past year. When I heard it being pitched as a “web scripting language that we can make run really fast” about a year ago by Lars Bak, I kind of dismissed it. I don’t find the ability to execute programs in a language very quickly a particularly important property of a program
Fixing Events in Javascript
Events are an integral part of Javascript programming. No matter if you use Javascript in the browser or on the server with node.js, you will be listening to, and perhaps trigger numerous events. Yesterday I talked about Twitter’s Flight, which, I argued, might be pushing events too far. Nevertheless, the fact that something can be pushed too far, does not mean it should avoided altogether. Events
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Chart.js
GitHub - SLaks/Qx: A set of LINQ-like extensions to Q for working with arrays of promises.
Promises in javascript with Q
http://www.jstherightway.com/
JavaScript concurrency and locking the HTML5 localStorage
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