Top Answers

1. What is the difference between visibility:hidden and display:none?
   96 votes
2. What's the difference between an element and a node in XML?
   42 votes
3. Is regular expression recognition of an email address hard?
   22 votes
4. How can I extract a predetermined range of lines from a text file on Unix?
   19 votes
5. Is there a difference between "==" and "is"?
   12 votes