tag : promises

JavaScript

ES7 Async Functions on Tuts+

It’s been months since I’ve given you all any content here. I’m trying to break that trend, but it will be a while and will take some major changes in order to start writing regularly again. This post isn’t even a full post. Rather, it is an announcement to bring your attention to a post I wrote elsewhere.

JavaScript

Patterns for Asynchronous Programming With Promises

Promises are currently the best tool we have for asynchronous programming and they appear to be our best hope for the forseeable future, even if they’ll be hiding behind generators or async functions. For now, we’ll need to use promises directly, so we should learn some good techniques for using them right now, especially when dealing with asynchronous operations on collections, whether they happen in parallel or sequentially.

JavaScript

Lazy Loading JavaScript With RequireJS

As sites are filled with more and more JavaScript, images, and other external assets, web pages have become more and more bloated and performance has started to become an issue. We’ve started to reduce the number of requests by concatenating our JavaScript and CSS files and using image sprites. We’ve shrunk file sizes by minifying and obfuscating our code and optimizing our images. All these measures are good, but they may not be enough. If you have a large JavaScript application, you could have a ton of JavaScript being loaded in that single concatenated file, and a lot of the code may be going to waste because it isn’t used. Let’s try to “lazy load” some of that code using RequireJS.

JavaScript

JavaScript Asynchronous Architectures: Events vs. Promises

I can’t go a single week without reading another article talking about promises. I’m not talking about when you promise your child that you’ll be there for his baseball game. I’m talking about a JavaScript concept that makes it simple to react to the completion of asynchronous actions without indenting ten levels when you need to perform one asynchronous action after another. While working on a Backbone application, I tried to use promises in my main asynchronous processes, and I’m not sure it measures up to my previous event hub architecture. Let’s compare!