XF 1.2 Javascript: Extending JS XF Function

[Dad.]

Hey all!

Have a javascript question moreso than a XenForo question, but maybe someone here will know. I want to be able to take a XenForo function, specifically the one that makes a modal box out of the OverlayTrigger class, and extend it. My goal is to say the overlay div created and add HTML to it.

Is there a way to extend a JS function in a neat way that would allow the default function(s) to work but with some added javascript?

Thanks,
Mike

 

[Dad.]

And of course without editing core a JS file.

 

[Jeremy]

JavaScript really doesn't have an extension system similar to any Object Oriented language. I, however, did find this:
http://stackoverflow.com/questions/4578424/javascript-extend-a-function

You may be able to work with that or use XenForo.register() to register you own function.