How to GET/POST SharePoint list/library data out side of SharePoint?

Question

I need to POST data in the SharePoint list from outside of SharePoint. I have created an Angular application and I need to POST data in the SharePoint list using the Angular application with REST API or PnP/JS.

Can anyone help me with the same?

Thanks

Answer 1

I guess you can use two approaches:

Using register an app in SharePoint and using ClientId and ClientSecret to authenticate. Ref.: Authorization Code OAuth flow for SharePoint Add-ins

USE MSAL Library to authenticate. If I'm not wrong there is an example using Angular to authenticate.

Ref.: Overview of the Microsoft Authentication Library (MSAL)