Add HTML Elements to XUL Addons
I've been working on a new addon at Mozilla which isn't anywhere near finished so I wont bother telling you what it's meant to do...because it could change at any moment. Since this is my first real addon, it's been a struggle, but that's a good thing -- it means I'm learning a ton. One problem I ran into was trying to get a checkbox (INPUT) element within the addon via JavaScript -- nothing was displaying.
After a bit of research and guesswork, I figured out what I was doing wrong -- I was using the wrong document method to create the element:
var input = document.createElementNS("http://www.w3.org/1999/xhtml", "input");
Using document.createElementNS with the proper namespace resulted in my checkbox displaying in all of its glory. It's beautiful square, checked glory. Firefox addons can be created in a number of ways so if you're looking to create your own and you aren't seeing HTML elements correctly, keep this solution in mind!
![Camera and Video Control with HTML5]()
Client-side APIs on mobile and desktop devices are quickly providing the same APIs. Of course our mobile devices got access to some of these APIs first, but those APIs are slowly making their way to the desktop. One of those APIs is the getUserMedia API...
![9 Mind-Blowing Canvas Demos]()
The <canvas> element has been a revelation for the visual experts among our ranks. Canvas provides the means for incredible and efficient animations with the added bonus of no Flash; these developers can flash their awesome JavaScript skills instead. Here are nine unbelievable canvas demos that...
![Create Custom Events in MooTools 1.2]()
Javascript has a number of native events like "mouseover," "mouseout", "click", and so on. What if you want to create your own events though? Creating events using MooTools is as easy as it gets.
The MooTools JavaScript
What's great about creating custom events in MooTools is...
![Create Snook-Style Navigation Using MooTools]()
Jonathan Snook debuted a great tutorial last September detailing how you can use an image and a few jQuery techniques to create a slick mouseover effect. I revisited his article and ported its two most impressive effects to MooTools.
The Images
These are the same...
Reminded me of my initial days with JavaScript David! I also made the same namespace errors and then wondered for hours, what went wrong!