Regular Expressions in Opus?

bwpatric · **Joined:** November 3rd, 2004, 2:11 pm **Posts:** 323

Can Opus as exported with Flex handle regular expressions?

I have text entry fields in a mastery test where I need to be able to accept a fairly wide range of answers (especially if a word is misspelled).

Thoughts?

demofred · **Posted:** February 24th, 2005, 3:46 pm

Brian --

Rather than just using an "If" statement to check for a correct answer, I'd suggest using the SELECT and CASE feature of OPUS. Your first CASE would be the correct answer, then you could have other cases in which you try to quess the most common misspellings of the correct answer (all of which you would "accept").

SELECT - CASE is a very power tool, which also allows you to respond differently to different incorrect responses. For example, if the answer should be "100" you could have responses like "you're getting close" if the student guessed between 90 and 99, or "that's too high" if they answer over 100. It's a much more elegant response system than just indicating the answer is "wrong."

Reemski · **Posted:** August 31st, 2006, 11:33 am

Just a little kick to this topic :

Is there any way to use regular expressions in Opus ?
In need a elegant script to remove html tags from a string. The nicest way to do this is with regular expressions, i think.

Thanks!

edit: my current solution is the following, but it think sometimes it will strip to much...
edit2 : changed script. I used break to exit loop, but this exits function too.

Code:

function strip_tags(input) 
{
   var value = input;
   // loop till no more brackets
   while (true)
   {
      // find first <   and second
      var first  = value.indexOf('<', 0)
      if( first  == -1 )   return value;
      var second = value.indexOf('>', first)   
      if( second == -1 )   return value;
      
      // now strip all between first and second.
      var value = value.substring( 0, first) + value.substring( second+1);
   }
   return value;
}

Digital Workshop

Regular Expressions in Opus?

Who is online