Thanks for the post. One thing, I wanted to test this in chrome and I realized your examples are all based on a larger Playground with a test HTML doc.

Maybe one self-contained example w/ a new function you can copy/paste into the console to play around with would be cool.

I was mostly using it as a test to see if it worked in Chrome so I could start using it.

That's a good idea. I'll have a think about a JS only example, although the reference pages have some, they log results to the console and so I thought some HTML might be interesting to see.

Maybe it's interesting for you: the method pages have compat data at the bottom so you can see what's supported and in which browser release.