I am still learning Javascript, currently I am trying my best to convert an excel to json to use as search data on a web page.

But I am unable to figure how to do that.

I have tried code snippets that are able to upload a file and convert, I am trying to convert that code into picking up a local file but facing the issue that "File is not a blob".

Due to my inexperience in JS this has become too daunting. Please help.

P.S: Pure javascript code please, I can do it with node libraries as well but its just for a basic site.