$('table').remove();
$('</table>').appendTo('body');
startDate = new Date().getTime();$.each(arr, function(count, item) {
    var newTd = $('<td></td>').html(item).attr('name','pieTD');
    var newTr = $('<tr></tr>');
    newTr.append(newTd);
    $('table').append(newTr);
});
endDate = new Date().getTime();
console.log(endDate - startDate);


$('table').remove();
$('</table>').appendTo('body');
startDate = new Date().getTime();
var textToInsert = ''; var i = 0; var length = arr.length;
for (var a = 0; a <length; a += 1) {
    textToInsert += '<tr><td name="pieTD">';
    textToInsert += arr[a];
    textToInsert += '</td> </tr>' ;

}
$('table').append(textToInsert);
endDate = new Date().getTime();
console.log(endDate - startDate);


$('table').remove();
$('</table>').appendTo('body');
startDate = new Date().getTime();
var textToInsert = []; var i = 0; var length = arr.length;
for (var a = 0; a <length; a += 1) {
    textToInsert[i++]  = '<tr><td name="pieTD">';
    textToInsert[i++] = arr[a];
    textToInsert[i++] = '</td> </tr>' ;

}
$('table').append(textToInsert.join(''));
endDate = new Date().getTime();
console.log(endDate - startDate);