[onetom]

It's hard to make that performant.

As a reference, here is a browser-adapted version of the https://cuis.st/ Smalltalk environment, which does its own rendering onto a canvas:

https://github.com/nmingotti/The-Cuis-CookBook/wiki/Run-Cuis...

[MatthiasPortzel]

It’s not performant if you’re using JavaScript APIs. But it’s also possible to write to a canvas with WebGL, which is hardware accelerated and is much faster than jQuery. I believe (although I can’t find a source for it now), that xterm.js used this strategy.