Hi, I'm Thomas Fuchs. I'm the author of the script.aculo.us user interface JavaScript library, a member of the Prototype core team and a Ruby on Rails core alumnus.
You're using my JavaScript work every day, even if you're not aware of it!

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Extending Prototype

July 10th, 2006

Here are two must-read articles on extending Prototype—here we go:

Writing Custom Iterators For Prototype shows how to use the addMethods method of Prototype’s Element object and the comments include a nice $w() method akin to Ruby’s %w() shortcut for creating arrays
The DOM Ready Extension for Prototype adds a nice Event.onDOMReady() method (also see this)

Nice to see this great stuff popping up everywhere—please don’t stop.