Hi Adam,
Thanks for your update.
Query : When working in offline mode how does the creation of new rows or editing of rows work?
In Essential JavaScript 2 Grid component, If we set data manager offline property as true, then Grid will sent the server side request only once for loading the data at initialization. After that all grid actions such as paging filtering and CRUD(adding, editing, deleting) operation etc will be done based on the loaded data in the client side only.
Note: When use offline mode, it does not send server side request while perform CRUD operation.
Please get back to us if you need further assistance.
Regards,
R.Dhivya