To work, the library needs a base64 string representing an XLSX file.
This string is analyzed and its properties are converted to a complex JS object representing the same data.
The reverse operation is also possible.
XLSX.js allows spreadsheets to be used in Web apps without relying on old technology like ActiveX or on server-side file conversions.
What's New in This Release: [ read full changelog ]
· Worksheets are now objects with three properties.
· When reading a file with XLSX.js, all cells will now be objects with a value property and a formatCode property.