With Trossard's goal in the second half, Arsenal 1-0 Fulham.
Arteta said: "I am very happy. We have experienced the difficulty of winning here in the past two seasons, and we felt it again today. I like the mentality of the team."
"We did not start well, and there were some mistakes that gave the opponent some opportunities, but then the team began to gradually control the game and the whole game was very dominant. Strengths. We had to be patient because the opponent was well organized, well adjusted and very solid. We tried different approaches and could have scored earlier but finally found the opportunity through a set piece."
Trossard's goal means the Gunners have had ten different players score in the league this season, which is more than any other team.
"This is a good thing for the team because we don't rely on one or two players to complete this task. Goals can come from different ways, which is also a very important point. In addition, another clean sheet. I think today we did not allow our opponents to have a chance to shoot, which laid a solid foundation for our victory."
Arteta also praised the team's efforts to keep a clean sheet and said that the forward players first set the tone.
"Absolutely. The way our forward line chases the ball, applies pressure and creates chaos is amazing. I'm very pleased with the level of organization of the team, but more importantly the mentality and willingness to do these things."