copy_paste_table_to_spreadsheet.js

// optimized for rails
document.addEventListener("turbolinks:load", () => {
  $('[data-toggle="tooltip"]').tooltip()
  $('[data-toggle="popover"]').popover()
  
  if (document.querySelector('#target-btn')) {  
    // start of the actual copy paste action
    document.querySelector('#target-btn').addEventListener("click", (event) => {
      var el = document.getElementById("target-table");
      var body = document.body, range, sel;
      if (document.createRange && window.getSelection) {
          range = document.createRange();
          sel = window.getSelection();
          sel.removeAllRanges();
          try {
              range.selectNodeContents(el);
              sel.addRange(range);
          } catch (e) {
              range.selectNode(el);
              sel.addRange(range);
          }
      } else if (body.createTextRange) {
          range = body.createTextRange();
          range.moveToElementText(el);
          range.select();
      }
      var theButton = document.getElementById("target-btn");
      try {
        var ok = document.execCommand('copy');
        if (ok) theButton.innerHTML = 'Copied!';
        else theButton.innerHTML = 'Something went wrong.';
        } catch (err) {
          theButton.innerHTML = 'This browser is not supported.';
        }
    })
  }
})