User:TimR/sorttable.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

Documentation for this user script can be added at User:TimR/sorttable.

Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.

// This page provides a new function: ts_getSortKey and
//   rewrites the ts_resortTable function from:
//     http://en.wikipedia.org/skins-1.5/common/wikibits.js?61
//   in order to improve table sorting. See:
//     http://en.wikipedia.org/wiki/User:TimR/Tables
//   for details.

function ts_getSortKey(el) {
  if (typeof el == "string") return el;
  if (typeof el == "undefined") { return el };

  var keys = getElementsByClassName(el, "span", "sortkey");
  var str = "";
  var l = keys.length;

  if (l == 0) {
    return ts_getInnerText(el)
  }

  for (var i = 0; i < l; i++) {
    str += ts_getInnerText(keys[i]);
  }

  return str;
}

function ts_resortTable(lnk) {
  // get the span
  var span = lnk.getElementsByTagName('span')[0];

  var td = lnk.parentNode;
  var tr = td.parentNode;
  var column = td.cellIndex;

  var table = tr.parentNode;
  while (table && !(table.tagName && table.tagName.toLowerCase() == 'table'))
    table = table.parentNode;
  if (!table) return;

  // Work out a type for the column
  if (table.rows.length <= 1) return;

  // Skip the first row if that's where the headings are
  var rowStart = (table.tHead && table.tHead.rows.length > 0 ? 0 : 1);

  var itm = "";
  for (var i = rowStart; i < table.rows.length; i++) {
    if (table.rows[i].cells.length > column) {
      itm = ts_getSortKey(table.rows[i].cells[column]);
      itm = itm.replace(/^[\s\xa0]+/, "").replace(/[\s\xa0]+$/, "");
      if (itm != "") break;
    }
  }

  sortfn = ts_sort_caseinsensitive;
  if (itm.match(/^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/))
    sortfn = ts_sort_date;
  if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/))
    sortfn = ts_sort_date;
  if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d$/))
    sortfn = ts_sort_date;
  if (itm.match(/^[\u00a3$\u20ac]/)) // pound dollar euro
    sortfn = ts_sort_currency;
  if (itm.match(/^[\d.,]+\%?$/))
    sortfn = ts_sort_numeric;

  var reverse = (span.getAttribute("sortdir") == 'down');

  var newRows = new Array();
  for (var j = rowStart; j < table.rows.length; j++) {
    var row = table.rows[j];
    var keyText = ts_getSortKey(row.cells[column]);
    var oldIndex = (reverse ? -j : j);

    newRows[newRows.length] = new Array(row, keyText, oldIndex);
  }

  newRows.sort(sortfn);

  var arrowHTML;
  if (reverse) {
      arrowHTML = '<img src="'+ ts_image_path + ts_image_down + '" alt="&darr;"/>';
      newRows.reverse();
      span.setAttribute('sortdir','up');
  } else {
      arrowHTML = '<img src="'+ ts_image_path + ts_image_up + '" alt="&uarr;"/>';
      span.setAttribute('sortdir','down');
  }

  // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
  // don't do sortbottom rows
  for (var i = 0; i < newRows.length; i++) {
    if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") == -1)
      table.tBodies[0].appendChild(newRows[i][0]);
  }
  // do sortbottom rows only
  for (var i = 0; i < newRows.length; i++) {
    if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") != -1)
      table.tBodies[0].appendChild(newRows[i][0]);
  }

  // Delete any other arrows there may be showing
  var spans = getElementsByClassName(tr, "span", "sortarrow");
  for (var i = 0; i < spans.length; i++) {
    spans[i].innerHTML = '<img src="'+ ts_image_path + ts_image_none + '" alt="&darr;"/>';
  }
  span.innerHTML = arrowHTML;

  ts_alternate(table);    
}