regex to validate double values

Question

I\'m trying to come up with a regex to validate a double value. I will admit that I am crap at regex and really should buy a book... Anyway the range is large so here goes:

Answer 1

^[0-9]{0,2}\.?[0-9]{0,2}$

you can try it out here: http://www.regular-expressions.info/javascriptexample.html