How to use $.(#xx) or a url.fetch result?

How to use $.(#xx) or a url.fetch result?

I am very new to jQ, just listened to a talk yesterday, first time using...

After doing a url get with,

 var url = new URL();
 url.fetch('remoteUrl');

How do I do a $.(#high_price) on the resulting url.response string?

Codially,
Cqcn