I would like to know how to read data from a multi-worksheet MS Excel 2003 file using nothing, but jquery. I have read several solutions for PHP/JQuery, ActiveX, etc..., but
There are a few tools (libraries) for nodeJS that you can find on the npm website. There's one called excel that reads xlsx files and there's one called office for most ms office files. Now since it's all Javascript anyway, you should be able to download, and check out the source to find a way to integrate it on the client-side. Hope that helps