[ble]

You want to look at the DOM structure of the page as it exists in the loaded page and have I got a treat for you! Figure out how to open the web inspector for your browser; the keyboard shortcuts are ctrl-shift-I or cmd-shift-I or cmd-opt-I on a few (platform, browser) pairs.

(This will show you the actual DOM, not the React components... but since you were talking about 'view-source', this might help you too.)

[hirsin]

Or hit F12, works in every browser and platform as long as the key is present.

[hobby_body]

Between Firefox, Chrome, and Safari on OSX, it only does anything in Firefox (toggles Firebug).

[fensipens]

Thanks, that's what I've been looking for!

[ble]

You're welcome!

Using the web inspector has been such a massive and continuous boost to my learning/work with webpages and I'm extremely glad to share it with someone it might help.