javascript - 单击按钮时删除正确的行

Question

我的程序中有一个 4 列表，其中一列是每行都有一个删除按钮的列。每当我单击删除按钮时，我希望它删除相应的行并通过 AJAX 发送删除查询来删除数据库中的该行。

现在似乎发生的是每当我单击删除按钮时，它都会删除其上面的行，或者如果我删除上面没有行的顶行，它根本不会删除，我就是这样做的不想。

我的控制台中没有收到任何错误。尽管如此，我每次都会收到成功的行已删除消息。

那么我该如何解决这个问题并让删除工作，以便删除与按钮所在位置对应的行？

带有删除按钮的表格 HTML:

<table id="skuTable" cellspacing="5" class="ui-widget ui-widget-content">
<thead>
    <tr class="ui-widget-header">
        <th class="skuRow">SKU Group</th>
        <th class="skuRow">Group ID</th>
        <th class="skuRow">Edit</th>
        <th class="skuRow">Delete</th>
    </tr>
</thead>
<tbody>

    <?php foreach ($dbh->query($query) as $row) {?>

    <tr>
        <td class="sku_group" id="sku_group-<?php echo intval ($row['SKU Group'])?>"><?php echo $row['SKU Group'];?></td>
        <td class="group_id" align="center" id="group_id-<?php echo intval ($row['Group_ID'])?>"><?php echo $row['Group_ID'];?></td>
        <td><button type="button" class="edit" name="edit">Edit</button></td>
        <td><button type="button" class="delete" onclick="deleteRow(this)">Delete</button></td>
    </tr>

<?php } ?>

</tbody>

JavaScript:

function deleteRow(r) {

if (confirm('Are you sure you want to delete this entry?')) {
    var i = r.parentNode.parentNode.rowIndex;
    document.getElementById("skuTable").deleteRow(i);
  }


    request = $.ajax({
      type: "POST",
      url: "delete.php",
      data: "Group_ID="+i
    });


        request.done(function (response, textStatus, jqXHR){
          if(JSON.parse(response) == true){
            console.log("row deleted");
          } else {
            console.log("row failed to delete");
          }
        });

        // Callback handler that will be called on failure
        request.fail(function (jqXHR, textStatus, errorThrown){
            // Log the error to the console
            console.error(
                "The following error occurred: "+
                textStatus, errorThrown
            );
        });

        // Callback handler that will be called regardless
        // if the request failed or succeeded
        request.always(function () {

        });


}

删除.php:

<?php

  $SKU_Group = $_POST['SKU Group'];
  $Group_ID = $_POST['Group_ID'];

  $host="xxxxxxxxxx"; 
  $dbName="xxxxxx"; 
  $dbUser="xxxxxxxxxxxx"; 
  $dbPass="xxxxx";

  $pdo = new PDO("sqlsrv:server=".$host.";Database=".$dbName, $dbUser, $dbPass);

  $delete = "DELETE FROM SKU_Group_Dim WHERE Group_ID = '$Group_ID'";

  $stmt = $pdo->prepare($delete);
  $result = $stmt->execute();
  echo json_encode($result);
  if(!$result) {
      echo sqlsrv_errors();
  }

?>

Answer 1

问题是表头的 rowIndex 为零，而实际行则从 rowIndex 1 开始。例如

 request = $.ajax({
  type: "POST",
  url: "delete.php",
  data: "Group_ID="+i+1
});

编辑答案，因为我读问题的速度太快。