Javascript “保存”按钮在表中不起作用

我有一些代码，可以在单击add时添加行。添加行可以很好地工作，但在保存按钮之后就不起作用了。我使用JavaScript来实现这一点，但在单击save按钮时没有控制权转移到代码中

      <?php
  include_once("noaccess.php"); 
  include_once(CLASS_PATH."fetch_service.php"); 
  $objfetch = new fetchService();
  include_once(CLASS_PATH."update_service.php"); 
  $objupdate = new updateService();


  ?>
  <!--  -->
  <div class="dashboard">
      <h2>Update Extension</h2>
      <?php
      $result = $objfetch->fetch_ext("decode(password, '\$VarahaMVC\$') as password,id,firstname,","where `account_id`='".$_SESSION['account_id']."' ORDER BY `id`");
      $i = "1";
    echo   $cnt = sizeof($result);
      if ($cnt == $row3['num_of_lines']){
      echo '<span style="color:#df0909;text-align:center;"><h3>Maximum Extension Limit Reached.</span></h3>';

      }
      ?>

      <!--**
          ** EDIT EXTENSION
          *-->
      <?php if(isset($_COOKIE['msg'])){?>
  <div class="msg">
      <span><?php echo $_COOKIE['msg'];setcookie("msg","",time()-5,"/");?></span>   
      <div class="clear"></div>
  </div>
  <?php }?>

  <?php if(isset($_COOKIE['err'])){?>
  <div class="err">
      <span><?php echo $_COOKIE['err'];setcookie("err","",time()-5,"/");?></span>   
      <div class="clear"></div>
  </div>
  <?php }?>

      <div id="umcloader" style="float:left;"></div>

      <form name="frmextension" id="frmextension" action="" method="post">
      <input type="hidden" id="hid_mode" value="<?php echo $mode;?>" />
      <table id="tblext" class="tbl_altcolor shadow" style="width:98%;margin-left:20px" align="left">
      <thead>
          <tr align="center" bgcolor="#999999" height="25">
          <th width="8%">Name</th>
          <th width="6%">Extension</th>
          <th width="8%">Password</th>
          <th width="8%">Confirm Password</th>
          <th width="8%">number</th>


          </tr>
      </thead>

      <tbody style=" border-collapse:collapse">

      <input type="hidden" name="case" id="case" value="update_ext" />

      <?php

          foreach($result as $row)
          {
      ?>
          <tr align="center">
              <td width="8.5%">
                  <input type="hidden" name="hid_extid[<?php echo $i;?>]" id="hid_extid<?php echo $i;?>" value="<?php echo $row['id'];?>"/>
                  <input type="text" name="fname[<?php echo $i;?>]" id="fname<?php echo $i;?>" class="input required" placeholder="Enter First Name" value="<?php echo $row['firstname'];?>" style="width:80% !important" />
              </td>

              <td width="85px">
                  <?php echo $row['ext_number'];?>
                  <input type="hidden" name="ext[<?php echo $i;?>]" id="ext<?php echo $i;?>" class="input required digits extvalue" placeholder="Enter Extension" value="<?php echo $row['ext_number'];?>" style="width:80% !important" />
              </td>

              <td width="113px">
                  <input type="password" name="password[<?php echo $i;?>]" id="password<?php echo $i;?>" class="input required" placeholder="Enter Password" value="<?php echo $row['password'];?>" style="width:70% !important" /> 
              </td>
              <td width="113px">
                  <input type="password" name="cpass[<?php echo $i;?>]" id="cpass<?php echo $i;?>" equalto="#password<?php echo $i;?>" class="input required" placeholder="Enter Confirm Password" value="<?php echo $row['password'];?>" style="width:70% !important" />
              </td>
              <td width="129px">
                  <select name="did[<?php echo $i;?>]" id="did<?php echo $i;?>" class="input validdid chkdid"  style="width:90% !important">
                      <option value="">Select</option>
                      <?php

                      global $mysqli;
                      $did_array = array();
                      $query  = "select `id`, `DID` from `did` where account_id='".$_SESSION['account_id']."' and `DID_type` in ('E','X')";
                      $result = $mysqli->query($query);
                      while($row2 = $result->fetch_array(MYSQLI_ASSOC)){
                      $did_array[$row['id']] = $row['DID'];
                      ?>
                      <option value="<?php echo $row2['id'];?>" <?php echo $row['did_id']==$row2['id'] ? "selected":"";?>><?php echo $row2['DID'];?></option>
                      <?php }?>
                  </select>

                  <input type="hidden" name="old_didid[<?php echo $i;?>]" value="<?php echo $row['did_id'];?>">
              </td>

          </tr>
      <?php $i++;} ?>
      </tbody>

      <tfoot>
          <tr>
              <td colspan="13">
                  <?php if($cnt<$row3['num_of_lines']){ ?>
                  <span style="float:left; margin:5px"><input type="button" name="add" id="add"  class="btn" value="Add" /></span>
                  <span style="float:left; margin:5px"><a href="<?php echo SITE_URL;?>index.php?view=upload_csv" id="upload_csv" name="upload_csv" class="btn">Upload CSV</a>

                  <?php }if($cnt>1){ ?>
                  <span style="margin-left:5px; float:left; margin:5px"><input type="button" name="remove" id="remove"  class="btnremove" value="Remove" style="display:none" /></span>
                  <?php } ?>
                  <span style="float:left; margin:5px"><input type="button" name="add" id="add"  class="btn" value="Add" style="display:none"  /></span>
                  <span style="margin-left:5px; float:left; margin:5px"><input type="button" name="remove" id="remove"  class="btnremove" value="Remove" style="display:none"/></span>
              </td>
          </tr>
      </tfoot>
      </table>
      <div class="clear">&nbsp;</div>
      <div style="float:left; margin:00px 10px 10px 30px;"><input type="button" name="save_ext" id="save_ext"  class="btn" value="Save" /></div>
      </form>
  </div>


  <script>
  $(document).on("click", "#save_ext", function () {
      var chk = "0";
      $("#frmextension").validate({
          errorPlacement: function(error, element) { }
      });
      $(".validdid").removeClass("error");  
      $(".extvalue").removeClass("error");
      for(j=0;j<=$(".validdid").length;j++)
      {
          for(i=j+1;i<=$(".validdid").length;i++)
          {
              /* ---- for DID ---- */
              if(($("#did"+i).val() == $("#did"+j).val()) && (i>1)) 
              {
                  if($("#did"+i).val()!="")
                  {
                      $("#did"+i).removeClass("valid");
                      $("#did"+i).addClass("error");
                      chk = "1";
                  }
              }

              /* ---- for EXTENSION ---- */
              if(($("#ext"+i).val() == $("#ext"+j).val()) && (i>1)) 
              {
                  if($("#ext"+i).val()!="")
                  {
                      $("#ext"+i).removeClass("valid");
                      $("#ext"+i).addClass("error");
                      chk = "1";
                  }
              }

          }
      }
      if(chk=="1"){return false;}
      else{
          $("#frmextension").submit();
      }
  });
  </script>

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@Alorika不工作您是否看到任何错误？是否调用了click回调函数？@Venugopal无错误显示是否调用了click回调函数？您能否尝试使用
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