How do I do a wildcard search in Storyline 2?

To split down that URL in JS, you'd want to figure out the rules to use in javascript. In this case, if you wanted to push the middle bit of a URL into a SL variable, you could use:

var player=GetPlayer();

myUrl="https://www.articulate.com/community/"

var urlMeat=myUrl.split('.')[1];

player.SetVar("mySLVar",urlMeat);

This would push the articulate part into a Storyline variable. To display this in a text block, you could use the %mySLVar% in the middle of a bit of text or by itself. The two % symbols on either side of a valid variable indicate a "macro" that fills the %X% with your variable value. For example, this:

• The URL you're looking at has %mySLVar% in it.

Would look like this when the JS has run:

• The URL you're looking at has articulate in it.

Thanks for helping out here, Steve! :)  

Thank you Steve!