谁能帮忙用js将竖排转横排？

谁能帮忙用js将竖排转横排。格式如图片:
图片说明
你的右边表格统计有问题，第一行的l应该是15，从哪里冒出来的22
 <table border="1" id="source">
    <tr><th>商品编号</th><th>颜色编号</th><th>尺码</th><th>尺码组</th><th>尺码顺序</th><th>调出数量</th></tr>
    <tr><td>a</td><td>1</td><td>s</td><td>衣服</td><td>1</td><td>10</td></tr>
    <tr><td>a</td><td>1</td><td>m</td><td>衣服</td><td>2</td><td>10</td></tr>
    <tr><td>a</td><td>1</td><td>l</td><td>衣服</td><td>3</td><td>15</td></tr>
    <tr><td>a</td><td>2</td><td>m</td><td>衣服</td><td>2</td><td>3</td></tr>
    <tr><td>b</td><td>1</td><td>24</td><td>裤子</td><td>2</td><td>5</td></tr>
    <tr><td>b</td><td>1</td><td>23</td><td>裤子</td><td>1</td><td>6</td></tr>
        <!--新增一个测试--->
    <tr><td>c</td><td>1</td><td>s</td><td>内档</td><td>1</td><td>15</td></tr>
    <tr><td>c</td><td>2</td><td>s</td><td>内档</td><td>1</td><td>13</td></tr>
    <tr><td>c</td><td>2</td><td>s</td><td>内档</td><td>1</td><td>13</td></tr>
</table><br /><br />
<table border="1" id="target">
    <tr><th colspan="5">&nbsp;</th><th>尺码顺序</th><th>1</th><th>2</th><th>3</th><th>4</th></tr>
    <tr><th colspan="6">&nbsp;</th><th>23</th><th>24</th><th>25</th><th>26</th></tr>
    <tr><th>商品编号</th><th>颜色编号</th><th>尺码</th><th>尺码组</th><th>尺码顺序</th><th>调出数量小计</th><th>S</th><th>M</th><th>L</th><th>XL</th></tr>
</table>
<script>
    var souce = document.getElementById('source'), target = document.getElementById('target');
    var kv = {}, key, row, item, tRow, td,num,order;
    for (var i = 1; i < source.rows.length; i++) {
        row = source.rows[i];
        key = row.cells[0].innerHTML + row.cells[1].innerHTML + row.cells[3].innerHTML;//看截图你应该是依据列1，2，4来确定目标行
        //获取kv存储的统计信息或者初始化一个，rowIndex为target表格的key的统计行
        if (kv[key]) { item = kv[key]; tRow = target.rows[item.rowIndex]; }
        else {
            item = { '1': 0, '2': 0, '3': 0, '4': 0, sum: 0, rowIndex: target.rows.length }
            kv[key] = item;
            tRow = target.insertRow(item.rowIndex);//新行
            td = tRow.insertCell(0); td.innerHTML = row.cells[0].innerHTML;
            td = tRow.insertCell(1); td.innerHTML = row.cells[1].innerHTML;
            td = tRow.insertCell(2);
            td = tRow.insertCell(3); td.innerHTML = row.cells[3].innerHTML;
            td = tRow.insertCell(4); td = tRow.insertCell(5); td = tRow.insertCell(6); td = tRow.insertCell(7); td = tRow.insertCell(8); td = tRow.insertCell(9);
        };
        //统计
        num = parseInt(row.cells[5].innerHTML) || 0;
        order = row.cells[4].innerHTML;//如果出现key相同的数据行，尺码小计
        item[order] += num;
        item.sum += num;//总计
        tRow.cells[5].innerHTML = item.sum;
        tRow.cells[5 + parseInt(order)].innerHTML = item[order];//更新尺码
    }
</script>
好吧自己顶下，希望高手能拿下100C
谁能帮忙 用js将竖排转横排？

谁能帮忙用js将竖排转横排？
