Included in the laundry list of new features that are descending on the world of web development with HTML5 are two quite nice ones: History Management and the hashchange event. These two features allow for much richer and faster JavaScript applications. Let's start with a quick overview of what these provide.
This event is quite simple. Whenever the window.location.hash property changes, by following a ...
One particular weirdness and unpleasantry in JavaScript is the set of equality operators. Like virtually every language, JavaScript has the standard ==, !=, <, >, <=, and >= operators. However, == and != are NOT the operators most would think they are. These operators do type coercion, which is why [0] == 0 and "\n0\t " == 0 both evaluate to true. This is considered, by sane people, to be a bad thing. Luckily, JavaScript does provide a ...
I was talking with a co-worker today about the behavior of setTimeout and setInterval when given a small interval, like 0 or 1. The expectation would be that the timer will fire in 0ms, or 1ms. However, as with other things in JavaScript, the reality is a bit different. It turns out that browsers actually have a minimum timer interval which they can't work any faster than ...
UPDATE: This technique has turned out to be dangerous in Chrome. It seems that Chrome will load the JS files into the cache, but then set an implied type="text/css" on them. This means that it will refuse to re-use them as JavaScript on future pages, until they have left the cache. I can no longer recommend this technique, but hope that it was at least interesting ...