PnP JS Core Comparision with Previous Framework

Basic Use Cases of for sp-pnp-js Library

Below screenshot gives examples of sp-pnp-js of how to use the library and some code snippets to read the library and update item in an library.

Get Items & Update Item

Batching

Logging
Below code demostrates of how to subscribe for pnp logging and activate log.

Reactjs Code Snippets for SharePoint Framework

Deploy SharePoint Framework With Containers