The streak is a Devils record and the second-longest in NHL history, behind the 2014-15 Minnesota Wild and 2005-06 Detroit Red Wings (12 games each).
"Every team feels the most comfortable at home, and we've been doing a really good job coming in there and just playing our game and finding ways to win," Mercer said. "I think that's a big accomplishment. Road games are hard and to come away with that many, it's a special thing."
New Jersey plays its next two games at home. Its first chance to tie the NHL record will be at the New York Rangers on Dec. 12.
"We've been on a great stretch, but it doesn't make a season," Devils forward Miles Wood said. "We've got to play the next 60-something games here and we've got to improve each game."
Fabian Zetterlund and Jack Hughes scored, and Wood had two assists for New Jersey (20-4-1). Akira Schmid made 31 saves.
"First two periods we were mad at ourselves, and we weren't happy with what was going on," Devils forward Erik Haula said. "What was said after two [periods], it was just like, 'You know what? We're in a good spot here. Let's try to put it together for 20 and get two points,' which is what we did."