Local script development. Loading data from Excel and API – tab output

1 – An Excel file is placed in the folder
2 – Run (conditionally) index.html
3 – Script parsit file
4 – The script parses additional API data with www.moex.com/
5 – Calculations are made
6 – A final table is generated, which is displayed in the browser.
7 – The browser has an "refresh" button that re-launches the procedure.