The Mouseover DOM Inspector is a nifty little bookmarklet that gives you information about DOM elements inline and allows you to manipulate the DOM on-the-fly. And what’s particularly impressive is its cross-browser compatibility.
There’s a wealth of interesting and useful info regarding the impact of Ajax-oriented development on page load times in this article by Jeff Moore.
Here’s a promising project: an effort to create an elegant OO implementation of Javascript. The author has taken a rather different approach to those I’ve seen in the past, and what he’s achieved already is quite impressive. I have to admit that I haven’t tried it yet, so it could be completely useless — but [...]
…if so, read this. There’s more info on the subject than you could shake a very big asynchronous stick at.
I’ve been using cURL (through PHP) to build a sort of proxy for a project I’m working on. I need to parse the returned headers (to recover the HTTP status), so had included a very simple script to do so. It had worked fine in the past, but for some reason barfed in this case. [...]