title: Read a csv or excel (xlsx) file with just javascript and html?
body: <p>Is it possible to read a excel xlsx or csv, preferably xlsx, using just JavaScript and html.  All the solutions (sheetsJS, d3{d3 uses the Fetch API}) I have found require a webserver. I understand I can get a simple webserver using web server for chrome or python or node.js. Futhermore, I understand I can run chrome with certain flags, but I would like to not do this because of security concerns.  I am building a demo for someone who is not web savvy and would like to avoid doing this. </p>
  
  <p>my file structure is very simple : </p>
  
  <pre><code>TestFolder
  | index.html
  | js/
      | test.js
  | data/
      | test.xlsx
  | css/
      | test.css
  </code></pre>
  
  <p>I simply need to read the xlsx and then display that data in html page.</p>