Javascript list to html table

js2table.js

// see http://stackoverflow.com/questions/5180382/convert-json-data-to-a-html-table
// Builds the HTML Table out of myList.
function buildHtmlTable(myList) {
  var res = '<table>';
  var columns = [];
  var headerTr$ = $('<tr/>');

  for (var i = 0; i < myList.length; i++) {
      var rowHash = myList[i];
      for (var key in rowHash) {
          if ($.inArray(key, columns) == -1) {
              columns.push(key);
              headerTr$.append($('<th/>').html(key));
          }
      }
  }
  res += "<tr>"+headerTr$.html() +"</tr>";

  for (var i = 0; i < myList.length; i++) {
    var row$ = $('<tr/>');
    for (var colIndex = 0; colIndex < columns.length; colIndex++) {
      var cellValue = myList[i][columns[colIndex]];
      if (cellValue == null) cellValue = "";
      row$.append($('<td/>').html(cellValue));
    }
    res += "<tr>" + row$.html() + "</tr>";   
  }
  res += "</table>";
  return res;
}