JavaScript实现获取table中某一列的值

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JavaScript实现获取table中某一列的值

1、实现源码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>JavaScript实现获取table中某一列的值</title><script type="text/javascript">     function getTdValue() {var tableId = document.getElementById("tab"); var str = "";for(var i=1;i<tableId.rows.length;i++){alert(tableId.rows[i].cells[1].innerHTML);} }</script></head><body style="width:100%; height:100%;">   <table style="width:100%; height:100%;" id="tab" onclick="getTdValue()" border="1" cellpadding="1" cellspacing="1">       <tr style="background-color:#CCC;">         <th>学号</th>         <th>姓名</th>         <th>性别</th>         <th>年龄</th>       </tr>       <tr>         <td>1</td>         <td>李斯</td>         <td>男</td>         <td>22</td>       </tr>       <tr>        <td>2</td>         <td>王倩</td>         <td>女</td>         <td>20</td>       </tr>       <tr>         <td>3</td>         <td>于谦</td>         <td>男</td>         <td>18</td>       </tr>       <tr>        <td>4</td>         <td>柳浪</td>         <td>女</td>         <td>19</td>       </tr>       <tr>         <td>5</td>         <td>诸葛亮</td>         <td>男</td>         <td>20</td>       </tr>       <tr>        <td>6</td>         <td>东方云</td>         <td>女</td>         <td>21</td>       </tr>       <tr>         <td>7</td>         <td>公孙策</td>         <td>男</td>         <td>22</td>       </tr>       <tr>         <td>8</td>         <td>宝清</td>         <td>女</td>         <td>23</td>       </tr>       <tr>         <td>9</td>         <td>智育</td>         <td>男</td>         <td>20</td>       </tr>       <tr>         <td>10</td>         <td>柳丝丝</td>         <td>女</td>         <td>21</td>       </tr>   </table></body></html>

2、设计结果

（1）初始化时

（2）单击第二列时

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