[jQuery编程挑战]007 切换数据表格的行列

<!DOCTYPE html>
<html lang="zh">
    <head>
        <meta charset="utf-8"/>
        <title>007 切换数据表格的行列</title>
        <style type="text/css">
            table{
                border: 1px solid #ccc;
                font-size: 14px;
                }

                table th, .header{
                background: orange;
                color: #fff;
                padding:10px;
                }

                table td{
                padding:10px;
            }
        </style>
        <script type="text/javascript" src="../js/jquery-1.11.0.js"></script>
        <script type="text/javascript">
            $(function() {
                $('#change').click(function(){
                    var $tableNew = $('<table></table'),
                        $tableOld = $('table');
                    for (var i = 0; i < 4; i++) {
                        var $trNew = $('<tr></tr>');
                        for (var j = 0; j < 4; j++) {
                            var $tdNew = $('<td></td>'),
                                content = $tableOld.find('tr:eq(' + j + ')').children().eq(i).html();
                            $tdNew.html(content);
                            if (j == 0) {
                                $tdNew.addClass('header');
                            }
                            $trNew.append($tdNew);
                        }
                        $tableNew.append($trNew);
                    }
                    $('body').append($tableNew);
                });
            })
        </script>
    </head>
    <body>
        <table>
            <tr>
            <th>列1</th>
            <th>列2</th>
            <th>列3</th>
            <th>列4</th>
            </tr>
            <tr>
            <td>数据1-1</td>
            <td>数据1-2</td>
            <td>数据1-3</td>
            <td>数据1-4</td>
            </tr>
            <tr>
            <td>数据2-1</td>
            <td>数据2-2</td>
            <td>数据2-3</td>
            <td>数据2-4</td>
            </tr>
            <tr>
            <td>数据3-1</td>
            <td>数据3-2</td>
            <td>数据3-3</td>
            <td>数据3-4</td>
            </tr>
        </table>
        <button id="change">change</button>
    </body>
</html>