This article, will share you the steps to create a simple SharePoint Hosted add in using Napa tool with the help of PnP JavaScript Library in SharePoint online to access the data from Host web.
If we search across the any search engine, we will get lot of references on how to create a SharePoint hosted add-in using JSOM or REST API. But in this post, I'll cover a steps to create a SharePoint hosted Add-In to access the data from the Add-In web using PnP JavaScript Library from Napa add-in tool in SharePoint Online.
What is SharePoint Add-In? What are the two webs in SharePoint Add-In?