"The result isn't that important but it is pleasing to have played well. Den Haag are a good side who pass the ball very well, so we had to work extremely hard to compete," Clough told the club's official website.
"I was impressed with how we dug in early on and played our way into the ascendancy as the match wore on. We hit the post and the crossbar and put them under pressure for periods of the game.
"We came here to get some game time into certain players and one of those was Miles Addison. He was excellent, looking strong and dominant at the back alongside Dean Leacock.
"Paul Green was another player we wanted to see play more football and he was sharper again, which bodes well for the Swansea game when we return to Championship action. It has certainly been a worthwhile exercise and one that we will benefit from."