动态增加表单方法--ff/ie

---------------------增加方法----------------------------

<h3><center>批量增加评论</center></h3><BR>
<form action="" method="post" οnsubmit="return check_form();">
<input type="button" value="增加一组评论输入栏" οnclick="insert_input();"/>  
<input type="submit" value="保存"/>
<BR>
<BR><div id=input_div></div>
<BR>
<BR><input type="button" value="增加一组评论输入栏" οnclick="insert_input();"/>  
<input type="submit" value="保存"/>
</form><script>
function check_form()
{
  if (objs('author[]').length < 1 )
  {
    alert('未有评论内容,不必提交');
    return false;
  }
  
  for (var for_i = 0; for_i < objs('author[]').length; for_i++)
  {
     if (/^ *$/.test(objs('author[]')[for_i].value) )
     {
       alert('第' + (for_i + 1 ) + '组评论用户未填写');
       objs('author[]')[for_i].focus();
       return false;
     }
     if (!/^[1-9]/d*$/.test(objs('agree[]')[for_i].value) )
     {
       alert('第' + (for_i + 1 ) + '组评论支持人数未填写(必须是数字)');
       objs('agree[]')[for_i].focus();
       return false;
     }
     if (/^ *$/.test(objs('title[]')[for_i].value) )
     {
       alert('第' + (for_i + 1 ) + '组评论标题未填写');
       objs('title[]')[for_i].focus();
       return false;
     }
     if (/^ *$/.test(objs('content[]')[for_i].value) )
     {
       alert('第' + (for_i + 1 ) + '组评论内容未填写');
       objs('content[]')[for_i].focus();
       return false;
     }
     if (/^ *$/.test(objs('back[]')[for_i].value) )
     {
       alert('第' + (for_i + 1 ) + '组评论回复未填写');
       objs('back[]')[for_i].focus();
       return false;
     }
  }
  
  return true;
}function obj(the_id)
{
  return document.getElementById(the_id);
}function objs(the_id)
{
  return document.getElementsByName(the_id);
}function insert_input()
{
   if (!window.comment_l) window.comment_l =1;
   
   var obj_h = document.createElement("div");
   obj_h.innerHTML = '第' + window.comment_l + '组评论栏<BR><BR>名字:<input id="author[]" name="author[]" style="width:100px;"> ' +
                   '支持人数:<input id="agree[]" name="agree[]" ><BR>' +
                   '标题:<input id="title[]" name="title[]" style="width:500px;"><BR>' + 
                   '评论:<textarea id="content[]" name="content[]" style="width:500px;height:50px;"></textarea><BR>' + 
                   '回复:<textarea id="back[]" name="back[]" style="width:500px;height:50px;"></textarea><BR><BR>';
  obj('input_div').appendChild(obj_h);
  window.comment_l++;
  
}
</script>

---------------------增加方法--------------

------------------数据库保存方法------------------

if( isset($_POST['content']) )
{
 $pid = $_GET['pid'];
 $for_i = 0;
 $sql_values = '';
 $strtest="/select|update|delete|insert/i";
 
 do
 {
  $sql_values .= ($for_i == 0?'(':',(');//不是第一组时,增加隔开符
 $sql_values .= "'". preg_replace($strtest,"",htmlspecialchars($_REQUEST['author'][$for_i])) ."'";//名称
 $sql_values .= ", '". preg_replace($strtest,"",htmlspecialchars($_REQUEST['title'][$for_i])) ."'";//标题
 $sql_values .= ", '". preg_replace($strtest,"",htmlspecialchars($_REQUEST['content'][$for_i])) ."'";//内容
 $sql_values .= ", '". preg_replace($strtest,"",htmlspecialchars($_REQUEST['back'][$for_i])) ."'";//回复
 $sql_values .= ", '". preg_replace($strtest,"",htmlspecialchars($_REQUEST['agree'][$for_i])) ."'";//支持
 $sql_values .= ",'$pid','".date("Y-m-d H:i:s")."','".date("Y-m-d H:i:s")."','".$_SERVER['REMOTE_ADDR']."','1')";//商品,时间,发表时间,ip,启用
 $for_i++;
 }while ($for_i < count($_POST['content']));
 
 $insert = "insert into ".TABLE.REVIEWS."(`author`,`title`,`content`,`back`,`agree`,`p_id`,`time`,`stime`,`ip`,`enable`) values $sql_values ";
 //echo $insert;
 $result=$db->query($insert);
 
 if($result)
 {
  $say = '评论发送成功！';
  $search = '?pid='.$pid.'&show_create=1';
 }
 else
 {
  $say = '评论发送失败！';
  $search = '?pid='.$pid;
 }  echo "<script>alert('$say');window.location.href='".$php_url."/bsh_syadmin/comment_by_us.php$search';</script>";
}------------------

-------------数据库保存方法------------------

这是为一个商场管理后台增加功能;