So many Web designers put zero thought into how their page looks when it is not loaded or not scrolled exactly past the trigger. So many sites say "0 happy customers", because someone thought showing incrementing numbers is cool. On this page, it opens up with a "100%" loading indicator, for a site that appears to have no interactivity that would require JS, just to show a pointless animation.
Yeah, I thought those code samples would run immediately, in which case maybe the loading would be justified (although surely very easy to avoid). Instead, they're links to a different page that has the same code sample and a link to run the code, meaning I need to press twice to see what the code does when it runs, which isn't a lot but is surely at least one (possibly two) clicks more than necessary. That said, it'…
I don't know the exact numbers, but the figures show you lose a high percentage of viewers with each click. So if you have 100 people who view the first page, 10 of them might click the link to the second page, and only 1 of them might click the link to the third page. If having customers view the running code is crucial, you'd want it on the very first page, above the fold.