The Javascript code in the article is server-side and not essential - it's just one way to take advantage of open shadowrootnodes and it could be written in PHP or anything else. It's showing how you can output your HTML in a very different order, with arbitrary delays, and still get the page layout you expect.

Javascript is being used to stream the HTML. the title is "Streaming HTML out of order without JavaScript"

if only it was "Consuming streamed HTML out of order without JavaScript"...

> It's worth noting though that there's no dependency on a JavaScript backend - the same thing can be achieved on PHP, Java, Go, etc.

The only Javascript in the article is on the server side to handle the HTTP.

Javascript is being used to stream the HTML. the title is "Streaming HTML out of order without JavaScript"