An Ido online Dictionary
In 2003, I was quite involved with the Ido language community. There were existing Ido dictionaries in several languages, but all of them were static list of words on HTML pages.
So I decided to create a dynamic dictionary, and since I only knew JavaScript at the time, that's what I used.
If I remember correctly, I used FileMaker to import the HTML files and parse them into a database, clean it up, then export it into individual JavaScript files per initial letter. That was quite a hack, and a lot of learning fun!
http://dicionarii.free.fr/