[failoflife]

<table class="table-editor">
                        <tbody>
                        <tr class="normal-row">
                            <td><input type="text" size="2" maxlength="2" placeholder="a1,1"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a1,2"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a1,3"></td>
                        </tr>
                        <tr class="normal-row">
                            <td><input type="text" size="2" maxlength="2" placeholder="a2,1"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a2,2"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a2,3"></td>
                        </tr>
                        <tr class="normal-row">
                            <td><input type="text" size="2" maxlength="2" placeholder="a3,1"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a3,2"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a3,3"></td>
                        </tr>
                        <tr class="normal-row">
                            <td><input type="text" size="2" maxlength="2" placeholder="a4,1"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a4,2"></td>
                            <td><input type="text" size="2" maxlength="2" placeholder="a4,3"></td>
                        </tr>
                        </tbody>
                    </table>


<input id="addcol" type="button" value="Add Column" />
<input id="remcol" type="button" value="Reomve Column" />
<input id="addrow" type="button" value="Add row" />
<input id="remrow" type="button" value="Remove row" />

$('#addcol').click(function() {
    var $tablerow = $('table.table-editor').find('tr');
    count = 0;

    $tablerow.each(function(index, value){
        count += 1;
        var $listitem = $(this);
        n = parseInt($listitem.index());
        var $input = $('<input>', {
        type: 'text',
        maxlength: '2',
        placeholder: 'a'
    });
        var $newRow = $("<td>");
        $("table.table-editor tr:eq(" + n + ")").append($newRow.append($input));
        $("input:text").attr("size", "2");
    });
});

$('#remcol').click(function() {
    var $tablerow = $('table.table-editor').find('tr');
    
    $tablerow.each(function(index, value){
        $("table.table-editor tr:eq("+index+") td:eq(-1)").remove();
    });
});

$('#addrow').click(function() {
    
    var $input = $('<input>', {
        type: 'text',
        maxlength: '2',
        placeholder: 'a'
    });
    var $newRow = $("<td/>");
    $('table.table-editor').append("<tr></tr>");
    $('table.table-editor tr:eq(0) td').each(function(index, value){
        $("table.table-editor tr:eq(-1)").append($input.append($input));
        $("input:text").attr("size", "2");
    });
});

$('#remrow').click(function() {
    $('table.table-editor tr:eq(-1)').remove();
});

1. Некорректно работает добавление строк. Как это исправить?
2. Хочу, чтоб при добавлении новых ячеек в placeholder писалось а(номер столбца),(номер строки)