There's a live demo here: https://playground.harmonyos.com/ https://playground.harmonyos.com/ The text editor is weirdly buggy in my Firefox for Android, thoug

There's a live demo here: https://playground.harmonyos.com/ https://playground.harmonyos.com/ The text editor is weirdly buggy in my Firefox for Android, though. I guess it hasn't really been stress-tested yet.