It's been a while since I worked on regexs in JavaScript, but generally the way you do this in most programming languages is to build the regex as a string and then pass it into the regex engine.

Javascript’s regular expression library is becoming world class, guaranteeing that the odd little pattern language will likely be around for generations to come.

The WebKit team has announced its next-generation JavaScript engine, called SquirrelFish Extreme, before the previous SquirrelFish even made it into a shipping product. In the last three months ...