<td><button type="button" class="delete" onclick="deleteRow(this)">Delete</button></td>

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 () {

        });


}

<?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();
  }

?>