By now you, or someone you know, has an iPad. Of course, Apple has been preparing people on how to design their web sites for optimal use with the iPad (see Preparing your Web Content for iPad). Of course, the biggest thing is the lack of Flash support on the iPad. Apple is instead pushing [...]

I’ve just returned back from the 2010 CSUN International Technology & Persons with Disabilities Conference in San Diego. This was the conference’s 25th year, which easily makes it the oldest conference I’ve ever attended or presented at. My colleague Victor Tsaran and I were presenting a talk entitled, The New Yahoo! Homepage: Challenging the Challenge [...]

Late last year, after spending 10 days tracking down a horrific bug, I posted, Empty image src can destroy your site. The post laid out a problem present in almost all modern browsers regarding empty string URLs in HTML. Empty-string URLs look like this:
<img src=”">
<script src=”">
<link rel=”stylesheet” href=”">
Depending on the browser, one or more of [...]

Without a doubt, the most often-used paradigm in JavaScript is events. Events are a manifestation of the observer pattern, a well-defined computer science design pattern for loose coupling. Loose coupling is incredibly important for creating maintainable, stable codebases. I talk a lot about loose coupling and its importance in my talk, Scalable JavaScript Application Architecture [...]

The first talk I gave after arriving at Yahoo! was entitled Maintainable JavaScript (video). As with most topics I write or speak about, I didn’t think it would be terribly controversial. The basis of the talk is that hacking around on your own and writing code in an enterprise environment are two different things. Web [...]

JavaScript quizzes have sure been popular lately. The latest addition is one by Dmitry A. Soshnikov and is affectionately called, The quiz. I must admit, this quiz has some of the most mind-bending examples of JavaScript I’ve ever seen. What I like about his quiz is that each piece of code is more or less [...]

Earlier this week, I posted my JavaScript quiz, containing some basic code along with questions. Here are the answers.
Example #1
var num1 = 5,
num2 = 10,
result = num1+++num2;
The key to understanding this example is to understand operator precedence. Clearly, +++ isn’t a valid operator, so the JavaScript engine [...]

Recently, there have been a couple of JavaScript quizzes floating around. There was one by Dmitry Baranovskiy (for which I explained the answers) and one by Kangax. But there are so many strange pieces of JavaScript that I thought I’d put together a quiz of my own. I’ve decided that each part will be a [...]

Last year was one in which I did a lot of research on performance, resulting in the Speed Up Your JavaScript blog post series (part 1, part 2, part 3, part 4) as well as several talks, namely JavaScript Variable Performance at the San Francisco JavaScript Meetup, Speed Up Your JavaScript at Google (video), and [...]

In a previous post, I talked about Internet Explorer 8’s wide array of browser and document modes. Most people are pretty familiar with how the various document modes affect layout in terms of how CSS is implemented, but what has been lost is how the document mode affects the core JavaScript engine in the browser. [...]