删除函数无法在php ajax中删除表中的行。

<button id="deleteBtn" onclick="deleteRow()">删除行</button>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
    function deleteRow() {
        $.ajax({
            url: "delete.php",
            type: "POST",
            data: { rowId: 1 },  // 要删除的行的ID
            success: function(response) {
                // 处理成功响应
                console.log(response);
            },
            error: function(xhr, status, error) {
                // 处理错误响应
                console.error(error);
            }
        });
    }
</script>

<?php
    // 建立数据库连接
    $host = "数据库主机";
    $username = "数据库用户名";
    $password = "数据库密码";
    $database = "数据库名";
    $conn = new PDO("mysql:host=$host;dbname=$database", $username, $password);

    // 获取要删除的行的ID
    $rowId = $_POST['rowId'];

    // 执行删除操作
    $stmt = $conn->prepare("DELETE FROM 表名 WHERE id = :id");
    $stmt->bindParam(':id', $rowId);
    $stmt->execute();

    // 检查删除是否成功
    if ($stmt->rowCount() > 0) {
        echo json_encode(["status" => "success", "message" => "删除成功"]);
    } else {
        echo json_encode(["status" => "error", "message" => "删除失败"]);
    }
?>