为啥所有按钮只控制同一行数据？
为啥所有按钮只控制同一行数据？应该怎么解决啊。
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title><script language="javascript" type="text/javascript"> function showtd(num) { document.getElementById("bg"+num).style.display = "none"; document.getElementById("show"+num).style.display = "block"; document.getElementById("ba"+num); document.getElementById("gn"+num); } function hidetd(num) { document.getElementById("bg"+num).style.display = 'block'; document.getElementById("show"+num).style.display = 'none'; } function showtext(){ document.getElementById("a").removeAttribute("readOnly"); document.getElementById("b").removeAttribute("readOnly"); document.getElementById("c").removeAttribute("readOnly"); document.getElementById("d").removeAttribute("readOnly"); document.getElementById("e").removeAttribute("readOnly"); document.getElementById("f").removeAttribute("readOnly"); } function hidetext(){ document.getElementById("a").readOnly="true"; document.getElementById("b").readOnly="true"; document.getElementById("c").readOnly="true"; document.getElementById("d").readOnly="true"; document.getElementById("e").readOnly="true"; document.getElementById("f").readOnly="true"; } </script></head><body> <form> <table border="1"> <?php $db = mysql_connect('localhost','root','root'); mysql_select_db('ec',$db); if (!$db) { die('Could not connect: ' . mysql_error()); } $result = mysql_query("select * from goods"); echo "<tr> <th>GoodsID</th> <th>BarCode</th> <th>GoodsName</th> <th>Category</th> <th>Specifications</th> <th>Manufacturers</th> <th>Numbers</th> <th>Instructions</th> <th>Pictures</th> <th>Update</th> <th>Delete</th> </tr>"; $n = 0; while($row = mysql_fetch_array($result)) { echo "<tr>"; echo "<td>" . $row['id'] . "</td>"; echo "<td>" . "<input type='text' id='a' value='$row[barcode]' style='width:60px;border:0px' readOnly>" . "</td>"; echo "<td>" . "<input type='text' id='b' value='$row[goods_name]' style='width:90px;border:0px' readOnly>" . "</td>"; echo "<td>" . $row['category'] . "</td>"; echo "<td>" . "<input type='text' id='c' value='$row[specifications]' style='width:90px;border:0px' readOnly>" . "</td>"; echo "<td>" . "<input type='text' id='d' value='$row[manufacturers]' style='width:90px;border:0px' readOnly>" . "</td>"; echo "<td>" . "<input type='text' id='e' value='$row[number]' style='width:60px;border:0px' readOnly>" . "</td>"; echo "<td>" . "<input type='text' id='f' value='$row[instruction]' style='width:80px;border:0px' readOnly>" . "</td>"; echo "<td>" . "<img src = '$row[picture_url]' style="max-width:90%"/ alt="为啥所有按钮只控制同一行数据？" >" . "</td>"; echo "<td id='bg$n'>". "<input id='btnshow$n' type='button' value='Update' onclick='showtd($n);showtext()' />". "</td>". "<td id='show$n' style='display:none'>". "<input id='btnclose$n' type='button' value='Save' onclick='hidetd($n);hidetext()'/>". "</td>"; echo "<td>"."<a href='delete.php?id=$row[id]'>"."Delete"."</a>"."</td>"; echo "</tr>"; ++$n; } mysql_close($db);?> </table></form></body></html>
回复讨论(解决方案)
总觉得你这代码有一堆语法问题啊
总觉得你这代码有一堆语法问题啊
可以正常运行。
循环输出有多少个id='a'呢？
然后 document.getElementById("a") 会得到什么……
什么情况？数据库读出来ID都对的吧？这个应该id有传过去吧，再试试吧~
循环输出有多少个id='a'呢？
然后 document.getElementById("a") 会得到什么……
我也觉得是这个id的问题，就是不知道怎么改。
什么情况？数据库读出来ID都对的吧？这个应该id有传过去吧，再试试吧~
a标签读出来的id是我在数据库内设置的主键，和d的id是两码事。
引用 1 楼 chendong_j 的回复:
总觉得你这代码有一堆语法问题啊
可以正常运行。
顿时感觉lz好强大
你每行同一列的 id 都相同，怎么能用 getElementById 来定位呢？
65-71行 设置的id都是重复的 如果区分的话可以把设置的ID（a,b,c...）前拼接上$row['id']加以区分
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