It is hard to know our future. What I am about to write could be wrong, but I will try...

At a basic level - it is all html, css, javascript and a server side language at the end of the day. Whether we are talking today or back in the early 00's.

For few years now, we add nodejs, typescript, React, etc.. on top of it. Personally, while I understand the purpose of using such tools for complicated web development, I still believe good websites can be created without them. It keeps is simple, small in size, etc.

Of course, a few years before that the push was angular or knockoutjs. Before that the push was jQuery, etc.

For the future. Lets say in the next 15 years, while I still believe that html, css and javascript will remain.. I do think react, like angular, will be replaced by something else.

Honestly, I think its just a matter of time before WASM takes over or the evolution of such technology. Personally, I have toyed WASM builds in compiled languages and think it will win for web development for speed, performance, and lack of fluff. However, we are not there yet.

For example, I had to build a internal web application for staff. They have a number of drop downs and text fields, etc. I was experimenting implementing it with (something like) immediate mode UI such as IMGUI in Go. While the results were great, it reached a deadend not because of WASM, langauge, but lack of UI features. I needed to include OpenStreetMap, which is not supported. I had to bite the bullet and accept writing it as a typical Website.

I went with htmx + leafletjs in the end. Again, it worked out well.