Data source from a wepage

Is there a way to pull data from polling a webpage? There seems to be tons of great resources for this amazing dashboard server application and I’m not 100% familiar yet with all the possibilities but surely there is a way to put in a web page URL (or internal IP) and get and parse the HTML to get a specific value and display it. An example would be putting in the URL for a particular youtube video and getting the views to be displayed. I know there are better ways of doing that but the ability to do that sort of thing from any webpage would be really helpful. Is there any tutorial or app for that already or is this something that just isnt built in at all with no intention of doing so…

Thanks