How to read an excel file contents on client side?

Question

From the JSP page, I need to browse excel file and after selecting file on system, I need to read that excel file contents and fill my form.

Currently I have tried

Answer 1

This one works in all major browsers.

https://catamphetamine.github.io/read-excel-file/

import readXlsxFile from 'read-excel-file'

const input = document.getElementById('input')

input.addEventListener('change', () => {
  readXlsxFile(input.files[0]).then((data) => {
    // `data` is an array of rows
    // each row being an array of cells.
  })
})

In the example above data is raw string data. It can be parsed to JSON with a strict schema by passing schema argument. See API docs for an example of that.

API docs: http://npmjs.com/package/read-excel-file