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Атрибут summary предназначен для краткого описания таблицы или указания ее предназначения. В отличие от тега <caption> содержимое summary никак не отображается и в браузере не выводится, однако может использоваться поисковыми системами или речевыми браузерами.
<table summary="текст">...</table>
Любой текст.
Нет.
Нет.
Пример
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Тег TABLE, атрибут summary</title>
</head>
<body>
<table border="1" width="400" summary="Таблица умножения">
<tr>
<th></th><th>1</th><th>2</th><th>3</th><th>4</th><th>5</th><th>6</th>
<th>7</th><th>8</th><th>9</th><th>10</th>
</tr>
<tr>
<th>1</th><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td>
<td>6</td><td>7</td><td>8</td><td>9</td><td>10</td>
</tr>
<tr>
<th>2</th><td>2</td><td>4</td><td>6</td><td>8</td><td>10</td>
<td>12</td><td>14</td><td>16</td><td>18</td><td>20</td>
</tr>
<tr>
<th>3</th><td>3</td><td>6</td><td>9</td><td>12</td><td>15</td>
<td>18</td><td>21</td><td>24</td><td>27</td><td>30</td>
</tr>
<tr>
<th>4</th><td>4</td><td>8</td><td>12</td><td>16</td><td>20</td>
<td>24</td><td>28</td><td>32</td><td>36</td><td>40</td>
</tr>
<tr>
<th>5</th><td>5</td><td>10</td><td>15</td><td>20</td><td>25</td>
<td>30</td><td>35</td><td>40</td><td>45</td><td>50</td>
</tr>
<tr>
<th>6</th><td>6</td><td>12</td><td>18</td><td>24</td><td>30</td>
<td>36</td><td>42</td><td>48</td><td>54</td><td>60</td>
</tr>
<tr>
<th>7</th><td>7</td><td>14</td><td>21</td><td>28</td><td>35</td>
<td>42</td><td>49</td><td>56</td><td>63</td><td>70</td>
</tr>
<tr>
<th>8</th><td>8</td><td>16</td><td>24</td><td>32</td><td>40</td>
<td>48</td><td>56</td><td>64</td><td>72</td><td>80</td>
</tr>
<tr>
<th>9</th><td>9</td><td>18</td><td>27</td><td>36</td><td>45</td>
<td>54</td><td>63</td><td>72</td><td>81</td><td>90</td>
</tr>
<tr>
<th>10</th><td>10</td><td>20</td><td>30</td><td>40</td><td>50</td>
<td>60</td><td>70</td><td>80</td><td>90</td><td>100</td>
</tr>
</table>
</body>
</html>
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