As I’ve blogged about before, I’ve been working on sample code for the source-editor.jsm that was added to Firefox as part of the ongoing work on the developer tools. This sample code evolved over time into a full-fledged extension, and one I’m rather proud of. I just posted it to AMO today.
This makes it a handy tool for experimenting with HTML, and a nice learning tool. In addition, if you open up an about:blank tab and edit its source, you can write HTML from scratch and see what it looks like rendered on screen. That’s also a pretty neat trick.
There are things that would be fun and useful to add to it, but I probably need to move on and get to writing again! So I’ve posted the code to Github. Feel free to take a look and tweak it! There’s an IDEAS.txt file in the repository you can look at for some thoughts for things that might be handy to add.