this within another function, then you might not realize that what you actually need is
The first time you hit upon the problem, you might be inclined to set
this to a variable that you can reference when you change context. Many people opt for
_this or sometimes
context as a variable name. They’re all usable and nothing is wrong with doing that, but there is a better, dedicated way.
At present, jQuery is the de facto library for working with the document object model (DOM). It can be used with popular client-side MV* frameworks (such as Backbone), and it has a ton of plugins and a very large community.
Nowadays, with any Web app you build, you have dozens of architectural decisions to make. And you want to make the right ones: You want to use technologies that allow for rapid development, constant iteration, maximal efficiency, speed, robustness and more.
If you had to name one thing that could have been better at the last conference or meetup you attended, what would it be? I bet you’d say that the content or the interaction could have been better in some way. I created Onslyde to solve this problem. It’s a free service and open-source project that (hopefully) will make public speaking easier and conferences better.
The motivation for the project came from my own speaking engagements in the tech industry. I wanted to see how many people in the audience actually agreed or disagreed with what I was saying. I also wanted to leverage their experience and knowledge to create a better learning environment.Read more...
Federico was the only other kid on the block with a dedicated ISDN line, so I gave him a call. It had taken six hours of interminable waiting (peppered with frantic bouts of cursing), but I had just watched 60 choppy seconds of the original Macintosh TV commercial in Firefox, and I had to tell someone. It blew my mind.
Video on the Web has improved quite a bit since that first jittery low-res commercial I watched on my Quadra 605 back in 7th grade. But for the most part, videos are still separate from the Web, cordoned off by iframes and Flash and bottled up in little windows in the center of the page. They’re a missed opportunity for Web designers everywhere.Read more...
The Web has succeeded at interoperability and scale in a way that no other technology has before or since. Still, the Web remains far from “state of the art”, and it is being increasingly threatened by walled gardens. The Web platform often lags competitors in delivering new system and device capabilities to developers.
Worse, it often hobbles new capabilities behind either high- or low-level APIs, forcing painful choices (and workarounds) on developers. Despite browser versions being released much faster, new capabilities still take a long time to materialize, and often do so in forms that are at best frustrating and at worst nearly useless to large swathes of the developer community for solving real-world needs.Read more...
Click, touch, load, drag, change, input, error, resize — the list of possible DOM events is lengthy. Events can be triggered on any part of a document, whether by a user’s interaction or by the browser. They don’t just start and end in one place; they flow though the document, on a life cycle of their own. This life cycle is what makes DOM events so extensible and useful. As developers, we should understand how DOM events work, so that we can harness their potential and build engaging experiences.
Throughout my time as a front-end developer, I felt that I was never given a straight explanation of how DOM events work. My aim here is to give you a clear overview of the subject, to get you up to speed more quickly than I did.Read more...
With the release of Ember.js 1.0, it's just about time to consider giving it a try. This article aims to introduce Ember.js to newcomers who want to learn more about the framework. Users often say that the learning curve is steep, but once you’ve overcome the difficulties, then this framework is tremendous.
This happened to me as well. While the official guides are more accurate and up to date than ever (for real!), this post is my attempt to make things even smoother for beginners. First, we will clarify the main concepts of the framework. Next, we’ll go in depth with a step-by-step tutorial that teaches you how to build a simple Web app with Ember.js and Ember-Data, which is Ember’s data storage layer. Then, we will see how
components help with handling user interactions. Finally, we will dig a little more into Ember-Data and template precompiling.