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How JavaScript gets the value of a column in a table

Source: Internet
Author: User
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1. Realize the source code

<!DOCTYPE HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/TR/xhtml1/DTD/ Xhtml1-transitional.dtd "> <HTMLxmlns= "http://www.w3.org/1999/xhtml"> <Head>  　　 <Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" />  　　 <title>JavaScript implementation gets the value of a column in a table</title>  　　 <Scripttype= "Text/javascript">  　　　　 functionGettdvalue () {vartableId=document.getElementById ("Tab"); varStr= "";  for(varI=1; I<Tableid.rows.length;i++) {alert (tableid.rows[i].cells[1].innerhtml); }}</Script> </Head> <Bodystyle= "width:100%; height:100%;">  　　 <Tablestyle= "width:100%; height:100%;"ID= "tab"onclick= "Gettdvalue ()"Border= "1"cellpadding= "1"cellspacing= "1">  　　　　 <TRstyle= "Background-color: #CCC;">  　　　　　　 <th>School Number</th>  　　　　　　 <th>Name</th>  　　　　　　 <th>Gender</th>  　　　　　　 <th>Age</th>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>1</TD>  　　　　　　 <TD>Reese</TD>  　　　　　　 <TD>Man</TD>  　　　　　　 <TD>22</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>2</TD>  　　　　　　 <TD>Wang Qian</TD>  　　　　　　 <TD>Woman</TD>  　　　　　　 <TD>20</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>3</TD>  　　　　　　 <TD>Yu Qian</TD>  　　　　　　 <TD>Man</TD>  　　　　　　 <TD>18</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>4</TD>  　　　　　　 <TD>Liu Lang</TD>  　　　　　　 <TD>Woman</TD>  　　　　　　 <TD>19</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>5</TD>  　　　　　　 <TD>Zhuge liang</TD>  　　　　　　 <TD>Man</TD>  　　　　　　 <TD>20</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>6</TD>  　　　　　　 <TD>Dongfangyun</TD>  　　　　　　 <TD>Woman</TD>  　　　　　　 <TD>21st</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>7</TD>  　　　　　　 <TD>Gongsunze</TD>  　　　　　　 <TD>Man</TD>  　　　　　　 <TD>22</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>8</TD>  　　　　　　 <TD>Baoqing</TD>  　　　　　　 <TD>Woman</TD>  　　　　　　 <TD>23</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>9</TD>  　　　　　　 <TD>Intellectual</TD>  　　　　　　 <TD>Man</TD>  　　　　　　 <TD>20</TD>  　　　　 </TR>  　　　　 <TR>  　　　　　　 <TD>10</TD>  　　　　　　 <TD>Liusi Silk</TD>  　　　　　　 <TD>Woman</TD>  　　　　　　 <TD>21st</TD>  　　　　 </TR>  　　 </Table> </Body> </HTML>

How JavaScript gets the value of a column in a table

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