In-Browser Editable Excel Table (React.js)

demo1

demo2

Features

Upload Excel/CSV file (nothing is actually being uploaded; the file is processed by your browser).
Add/edit/delete rows.
Add/edit/delete column.
Edit headers.
Write custom validate functions to validate the content of each cell in a given column.
Mobile number validation function included. All cells in column Mobile are validated using libphonenumber-js.
Set headers as read-only, ie. preventing a column to be deleted.
Add new row on Tab when cursor is located in last cell