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It sure looks as if coach Brian Daboll is doing everything possible to elevate rookie Jaxson Dart into the backup quarterback role.

And Dart is doing everything he can to grab it.

Dart followed up a strong NFL preseason debut last week in Buffalo with a sensational showing for the Giants on Saturday night in a 31-12 victory over the Jets.

He left the field having completed his final 13 passes to six receivers, going 14-of-16 for 137 yards.

His passer rating was 123.2. He tossed one touchdown pass and muscled into the end zone from a yard out for a rushing touchdown.

He looked completely comfortable in his first game at MetLife Stadium and the fans sounded juiced seeing him for the first time.

Daboll once again went with his starters. Russell Wilson on first down on the fourth offensive series handed the ball to Tyrone Tracy Jr., who ran around the right side for a 12-yard gain.

And then, without warning, Daboll pulled Wilson out and Dart entered the game.

“I was like ‘Serious?’ ’’ Dart said. “He said ‘Yeah.’ I said ‘All right.’ ’’

Dart on his first snap was asked to get the ball out of his hands quickly and he flipped a backhand shovel pass to tight end Theo Johnson, who scooted 30 yards.

Dart then was replaced by Wilson.

“You never know when you’re gonna have to go in,’’ Daboll said. “Part of the multiple things we’ve done with young quarterbacks in years past. Thought it would be good for him to go in for one play, not know that he’s going in.

“I didn’t tell the coaches, I didn’t tell anybody. Just be ready to go when your number’s called.’’

The one-play cameo sure looked as if Daboll wanted to simulate a game situation where the starter (Wilson) had to come off the field for a play and the backup had to rush on without missing a beat.

There have been all sorts of trials and tests this summer for Dart, as Daboll has tried to see if the rookie can handle uncomfortable and unplanned moments.

If Dart passes enough of these tests, Daboll could go into the season having Dart as the backup quarterback and veteran Jameis Winston as the No. 3 quarterback.

Dart finished out the first half with the starting offensive line.

He got tripped up by Kingsley Jonathan attempting to scramble on third-and-6.

Dart had room to pick up the first down and grabbed his helmet in disgust as he hit the turf.

“Honestly, the third down that I had where the guy clipped my ankles, that’s gonna haunt me for a little bit,’’ Dart said. “Because I should have scored.’’

To start the third quarter, Daboll decided to go up-tempo — Dart thrived at that at Ole Miss — and he was a step ahead of the Jets defense.

He expertly directed a nine-play, 71-yard drive, hitting Montrell Washington for 19 yards, picking up a first down on a quick toss to Dante Miller and then capping the drive by finding tight end Greg Dulcich over the middle for a 20-yard touchdown.

Dart on the next series continued to play pitch-and-catch with his targets. His 13th consecutive completion was an 11-yarder to Juice Wells Jr., his former college teammate. Dart’s quarterback sneak made it a 21-6 Giants lead.

It was not exactly a rousing outing for Wilson, as the Giants once again played without top receiver Malik Nabers. Wilson went 4-for-7 for 108 yards, with one splash play.

Wilson from a clean pocket on the first series lofted one of his high-arching moon balls that is familiar to anyone who has seen him in action. Rookie Beaux Collins, racing down the right side, used his long strides (he is 6-foot-3) to run past safety Andre Cisco.

Collins caught the ball in stride at the Jets 25-yard line and nearly took it all the way, as Cisco recovered to make the tackle on the 1-yard line. Two plays later, Devin Singletary scored to make it 7-0.

“Dropped it in the bucket … just great vision by Russ to lay it up there,’’ Daboll said.

Wilson’s night of work ended when he and rookie Collins got crossed up and Wilson lobbed the ball into the end zone and the pass was intercepted by Qwan’tez Stiggers.

“Just a little miscommunication,’’ Wilson said. “We were on two different pages, I guess.’’

The starting offense stayed out there for four series.

Wilson worked behind the usual starting offensive line (once again without left tackle Andrew Thomas) for two series and then Evan Neal replaced Greg Van Roten at right guard.

The starting defense also stayed on the field for most of the first half.

Clearly pleased with Dart’s development, Daboll reiterated that Wilson is the starting quarterback and the Giants will continue to develop Dart.

“We have a plan for this quarterback,’’ Daboll said of Dart. “It’s specific for each quarterback that you have. They have to possess the traits that you covet, that you look for in the draft and you’ve got to keep working with them.’’