If you’ve read this blog from the beginning you’ll know I like to write CAPTCHAS. The reason being is that it is a technical challenge to write something that a computer has difficulty reading. I think the Codetcha I wrote a while ago was successful in concept because the code errors would be very difficult […]

I’ve known for a while that the replace function can call native functions in Firefox and IE. It works something like this:- ‘alert(1)’.replace(/.+/,eval) So the regexp searches for the alert string and passes the result to the eval function which it receives as an argument. But does it stop there? Well no actually. There’s more. […]