HTML tables to csv

html_table_to_csv.js

// selects all table rows element in an HTML document ("tr").
$$("tr").map(
  // for each row, select each table data element ("td").
  (row) => Array.from(
    row.querySelectorAll("td")
  // for each data element return the inner text surrounded by quotes and stripped of line breaks.
  ).map(
    (cell) => "'" + cell.innerText.replace("\n", " ") + "'"
  // join same row elements with ","
  ).join(", ")
// join all rows with "\n"
).join("\n")