The Terriers, who picked up their second away win of the season at Vicarage Road, were lifted to 11th in the top flight after the result.
Wagner has said that he has faith in his squad as they look to make a good first impression in their maiden Premier League season.
"Because we had no experience in the Premier League, at the start of the season, I had the hope that this group of players could survive," the German told Sky Sports News. ""Now, after playing 18 games, I have belief we have a chance to survive.
"First and foremost our target is to survive and to make sure we are in the Premier League next season as well. Apart from this, as we said to ourselves this season and the season before, we should not give ourselves a limit, it makes no sense, not in a single game and not for the whole season.
"We will try our best and take what we get out of this season. To give yourself a limit gives you a limit and this is what we should avoid. Our only aim is to play as well as we can."
Huddersfield will play Southampton, Stoke City and Burnley over the festive period.