I tried this code as written in CodePen on Chrome, and I got further, in fact, it almost worked. However, I get
Refused to execute script from 'http://api.forismatic.com/api/1.0/?&jsonp=jQuery31104107977640992704_1493006061699&method=getQuote&format=jsonp&key=15723&lang=en&_=1493006061700'
because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.
So basically, it looks like I got past the cross-domain problem, only to run into something new. I don’t think there is anything I can do about this other than choose a different random quote API?