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HTML 

              
                <!DOCTYPE html>
<html lang="ko">
  <head>
    <meta charset="utf-8">
    <title>scope 속성의 적용범위</title>
    <style>
      table{border-spacing:0;border-collapse:collapse}
      td,th{padding:5px 10px;border:solid 1px #999}
      th{background:#eee}
      td.scoped,th.scoped{background:#008;color:#fff}
    </style>
  </head>
  <body>
    <h1><code>scope</code> 속성의 적용범위</h1>
    <p><code>scope</code> 속성이 제공된 제목셀에 마우스 오버 혹은 키보드 접근 시 제목 셀의 적용 범위가 표시됩니다.</p>
    <p>참고: 아래 테이블 코드 예제는 <code>scope</code> 속성의 범위를 표시하기 위해 제작되었습니다. 일부 코드는 적절한
      구현이 아닐 수 있습니다.</p>

    <table>
      <caption><code>scope</code> 속성 적용 예제1</caption>
      <thead>
        <tr>
          <th scope="col" rowspan="2">교실</th>
          <th scope="col" colspan="2">수강생</th>
          <th scope="col" colspan="2">비수강생</th>
        </tr>
        <tr>
          <th scope="col">남</th>
          <th scope="col">여</th>
          <th scope="col">남</th>
          <th scope="col">여</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <th scope="rowgroup" colspan="5">1학년</th>
        </tr>
        <tr>
          <th scope="row">1반</th>
          <td>10</td>
          <td>5</td>
          <td>7</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">2반</th>
          <td>8</td>
          <td>12</td>
          <td>5</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">3반</th>
          <td>7</td>
          <td>6</td>
          <td>9</td>
          <td>7</td>
        </tr>
      </tbody>
    </table>
    <hr>
    <table>
      <caption><code>scope</code> 속성 적용 예제2</caption>
      <colgroup>
        <col>
        <col>
      </colgroup>
      <colgroup>
        <col>
        <col>
        <col>
      </colgroup>
      <thead>
        <tr>
          <th scope="col" colspan="2" rowspan="2">교실</th>
          <th scope="colgroup" colspan="2">수강생</th>
          <th scope="colgroup" colspan="2">비수강생</th>
        </tr>
        <tr>
          <th scope="col">남</th>
          <th scope="col">여</th>
          <th scope="col">남</th>
          <th scope="col">여</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <th scope="rowgroup" rowspan="3">1학년</th>
          <th scope="row">1반</th>
          <td>10</td>
          <td>5</td>
          <td>7</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">2반</th>
          <td>8</td>
          <td>12</td>
          <td>5</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">3반</th>
          <td>7</td>
          <td>6</td>
          <td>9</td>
          <td>7</td>
        </tr>
        <tr>
          <th scope="rowgroup" rowspan="3">2학년</th>
          <th scope="row">1반</th>
          <td>10</td>
          <td>5</td>
          <td>7</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">2반</th>
          <td>8</td>
          <td>12</td>
          <td>5</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">3반</th>
          <td>7</td>
          <td>6</td>
          <td>9</td>
          <td>7</td>
        </tr>
      </tbody>
      <tbody>
        <tr>
          <th scope="rowgroup" rowspan="3">3학년</th>
          <th scope="row">1반</th>
          <td>10</td>
          <td>5</td>
          <td>7</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">2반</th>
          <td>8</td>
          <td>12</td>
          <td>5</td>
          <td>8</td>
        </tr>
        <tr>
          <th scope="row">3반</th>
          <td>7</td>
          <td>6</td>
          <td>9</td>
          <td>7</td>
        </tr>
      </tbody>
    </table>

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script>
      $(function () {
        var applyIdxData = function () {
          var i;
          $('table').each(function () {
            var $table = $(this);
            var tidx = 0;
            $table.find('thead,tbody,tfoot').each(function () {
              var rowidx = 0;
              $(this).find('tr').each(function () {
                var colidx = parseInt($(this).data('colstart'), 10) || 0;
                $(this).find('th,td').each(function () {
                  $(this).attr('data-tidx', tidx)
                         .attr('data-rowidx', rowidx)
                         .attr('data-colidx', colidx);
                  if ($(this).attr('rowspan')) {
                    var $nextTr = $(this).parent();
                    for (var i = 1; i < Number($(this).attr('rowspan')); i++) {
                      $nextTr = $nextTr.next();
                      var colstart = 1;
                      if ($nextTr.data('colstart'))
                        colstart += Number($nextTr.data('colstart'), 10);
                      if ($(this).attr('colspan'))
                        colstart += Number($(this).attr('colspan'), 10) - 1;
                      $nextTr.attr('data-colstart', colstart);
                    }
                  }
                  if ($(this).attr('colspan')) {
                    colidx += Number($(this).attr('colspan'));
                  } else {
                    colidx++;
                  }
                });
                rowidx++;
              });
              tidx++;
            });
            if ($table.find('colgroup').length > 0) {
              var cgidx = 0, cgcols = 0, colsize = (function () {
                var size = 0;
                $table.find('tr').each(function () {
                  var _size = $(this).find('th,td').length;
                  if (_size > size) size = _size;
                });
                return size;
              }());
              $table.find('colgroup').each(function () {
                var cols = $(this).find('col').length;
                if (cols > 0) {
                  for (i = cgcols; i < cgcols + cols; i++) {
                    $table.find('th[data-colidx=' + i + '], td[data-colidx=' + i + ']').attr('data-cgidx', cgidx);
                  }
                  cgidx++;
                  cgcols += cols;
                }
              });
              for (i = cgcols; i < colsize; i++) {
                $table.find('th[data-colidx=' + i + '], td[data-colidx=' + i + ']').attr('data-cgidx', cgidx);
              }
              $table.find('th,td').each(function () {
                $(this).append(
                  '<br><small>' + $(this).data('tidx')
                    + ',' + $(this).data('rowidx')
                    + ',' + $(this).data('colidx')
                    + ',' + $(this).data('cgidx')
                    + '<' + '/small>'
                );
              });
            }
          });
        };

        applyIdxData();

        $('th').attr('tabindex', 0).each(function () {
          var scope = $(this).attr('scope');
          $(this).append('<br><code><small>scope="' + scope + '"<' + '/small><' + '/code>');
        });

        $('th').on('focus mouseover', function () {
          var $table = $(this).parents('table').eq(0);
          var tidx = $(this).data('tidx');
          var rowidx = $(this).data('rowidx');
          var colidx = $(this).data('colidx');
          var cgidx = $(this).data('cgidx');
          switch ($(this).attr('scope')) {
            case 'row':
              $table.find('td').each(function () {
                if ($(this).data('tidx') === tidx &&
                    $(this).data('rowidx') === rowidx &&
                    $(this).data('colidx') !== colidx) {
                  $(this).addClass('scoped');
                }
              });
              break;
            case 'col':
              var colspan = parseInt($(this).attr('colspan'), 10) || 1;
              $table.find('td').each(function () {
                var idx = $(this).data('colidx');
                
                if (idx >= colidx && idx < colidx + colspan) {
                  $(this).addClass('scoped');
                }
              });
              break;
            case 'rowgroup':
              $table.find('td').each(function () {
                if ($(this).data('tidx') === tidx) {
                  $(this).addClass('scoped');
                }
              });
              break;
            case 'colgroup':
              $table.find('td').each(function () {
                if ($(this).data('cgidx') === cgidx) {
                  $(this).addClass('scoped');
                }
              });
              break;
          }
        }).on('blur mouseout', function () {
          $('th,td').removeClass('scoped');
        });
      });
    </script>
  </body>
</html>
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