React - renderSubtreeIntoContainer: Use case example

Question

I've recently started using react and so far I'm enjoying it a lot.

However I'm struggling with the documentation.

I've seen some mentions of unstable_renderSubtreeIntoContainer / renderSubtreeIntoContainer mentioned here (github).

In which context would I use this? How would I use it?

Thanks a lot in advance!

Answer 1

One of the use cases is "portals" - when you need to render a component outside the react app, but still control it as usual. For example - https://github.com/tajo/react-portal/blob/master/lib/portal.js#L135