[jonathrg]

It is SSR, in the sense that the server sends HTML over the websocket. HTMX swaps out content based on the element id. Doc: https://v1.htmx.org/extensions/web-sockets/

If you mean SSE, then yes that would work just as well (unless you need the bidirectionality for the client to modify some aspect of the connection after the page has loaded). There is an htmx-sse extension too.

I'm not sure how XHR alone would let you automatically get backend state changes reflected to the frontend. You can poll one or more endpoint, but that's more complicated to get right and less efficient.

[klibertp]

> I'm not sure how XHR alone would let you automatically get backend state changes reflected to the frontend.

Long polling.

Check out (history of) "Comet": https://en.wikipedia.org/wiki/Comet_(programming)#Implementa...

[jpc0]

SSR is effectively long polling with a standardised format and is browser native.

Also writing a client ontop of an existing HTML client is very very easy so even when not on web it's east to implement...

[maddalax]

Mostly just thinking that XHR to mutate (form submissions, etc) and then SSE to send the updated DOM elements would be a good combo

[maddalax]

Sorry yes I meant SSE, mistyped!

[jonathrg]

> Mostly just thinking that XHR to mutate (form submissions, etc) and then SSE to send the updated DOM elements would be a good combo

Yes, that's basically the idea.