Next.js: Update `_app.js` readme to explain `Component` and `Container`

[timneutkens]

Currently it doesn't explain what Component and Container do, and what props they take, if any.

4145

[romainquellec]

👍

[robert-barcelona]

Has there been any progress on this? I don't see a good explanation here: https://github.com/zeit/next.js/#custom-app

[stoplion]

any update to this?

[fr3fou]

Any news?

[alfred-pb]

It's been more than a one year, would you mind adding an explanation? thanks!

[iquabius]

It looks like <Container/> is now deprecated: https://github.com/zeit/next.js/blob/cffa2e3f2165b58b77fb354d3f74a4ac8222b68f/packages/next/pages/_app.tsx#L60

[renielDev]

Im starting to learn react and next. And I am also curios about this. I hope this gets updated.

Thanks!

[dunatron]

It use to handle scrolling to hashes. This has been moved up the tree meaning is no longer needed to do this.
https://github.com/zeit/next.js/blob/master/errors/app-container-deprecated.md

[timneutkens]

Only the Component part is still relevant.

• Component is the page component
• pageProps are the properties for the page component

@lfades already got this covered in his docs updates that will be out soon.