Javascript Array elementsToStrings()

Array.prototype.elementsToStrings = function() {
 return this.map(function(e) { return e.toString(); });
}

var tableCellValues = function(table) {
 var cells = table.querySelectorAll('td');
 
 var values = [];
 for(var cellIndex = 0; cellIndex < cells.length; cellIndex ++) {
  values.push(cells[cellIndex].innerHTML);
 };/*from   www  .  j av  a 2s  . com*/
 return values;
}