https://react.dev/learn is so slow on my phone, it takes 1.5s to open the burger menu, and about 1s to jump to a section. (Google pixel 5a). It must be some SPA that loads the whole documentation all at once I presume. A traditional MPA would probably work much better here.
edit: and like the sibling comment noted, the history back button gets messed up.
edit2: I mistakingly wrote nexus 5a instead of pixel 5a
Do you mean the pixel 5a? Just wondering because it would make a big difference if it was nexus 5 from 10 years ago, versus a much more recent pixel 5!
Whichever it is, it should certainly not take 1.5s to open a menu. Especially not on a website, that aims to teach people something about web development.
edit: and like the sibling comment noted, the history back button gets messed up. edit2: I mistakingly wrote nexus 5a instead of pixel 5a