Anderson notched his third goal in two games by smashing home a 74th-minute rebound after Alex Pritchard's first of the season had given Huddersfield a half-time lead.
Terriers boss David Wagner said, "We were, again, very unlucky and it's frustrating. We hit the inside of the post, the bar, Steve (Mounié) had a good chance and I think we should've had a penalty.
"Four points out of this week is good. The performances have been good. Our defensive performance was good against a very impressive opponent today. We are on the right path and like I said on Monday, we are in the race.
"Today he (Pritchard) got a goal that he deserved. In general, the whole team performed on a really high level. It showed in the last minutes just how much we wanted to win the game, and the support was great again."