像这样一段网页脚本,生成了10个text输入框,如何编程区分输入框,并且填入数据?
<tr bgcolor="#FFFFFF" class="word">
<td colspan="3"> <div align="center">
<input name="f39" type="text" id="f39" value="" size="4">
年<BR>
<input name="f39" type="text" id="f39" value="" size="2">
月
<input name="f39" type="text" id="f39" value="" size="2">
日</div></td>
<td colspan="11"><textarea name="f39" cols="76" id="f39"></textarea></td>
<td><input name="f39" type="text" id="f39" value="" size="15"></td>
</tr>
<tr bgcolor="#FFFFFF" class="word">
<td colspan="3"> <div align="center">
<input name="f39" type="text" id="f39" value="" size="4">
年<BR>
<input name="f39" type="text" id="f39" value="" size="2">
月
<input name="f39" type="text" id="f39" value="" size="2">
日</div></td>
<td colspan="11"><textarea name="f39" cols="76" id="f39"></textarea></td>
<td><input name="f39" type="text" id="f39" value="" size="15"></td>
</tr>