search tags like stackoverflow? [duplicate]

Question

how do you code a search box like the one in Tags where you enter a tag name and all tags are showing immidiately without you press enter.

can someone link me a script or tutorial for that. is it javascript or jquery? does it involve ajax?

and does it search in the database for tags? or is it searching through a xml file with tags?

Answer 1

Check out this JS library, http://harvesthq.github.com/chosen/