Callum Harriott’s early goal was enough to give Charlton all three points and keep Huddersfield looking over their shoulders in the Championship.
Town were rocked in the third minute when Chris Solly squared a free-kick to Callum Harriott, who drove the ball home inside the right-hand post of Alex Smithies.
Rhoys Wiggins diverted Novak’s close-range attempt over the bar but Charlton could have made it 2-0 before the break when Danny Haynes raced onto a through ball from Harriott only to see Smithies divert the shot off target.
Novak’s glancing header forced David Button to tip the ball over and the Charlton goalkeeper also produced a fine reflex save to keep out Robinson’s close-range header from a cross from Dixon.
Clarke also came to Town’s rescue with an acrobatic clearance off the line after Lawrie Wilson flicked on to the far post from Jackson’s free-kick. Town responded with Button pawing away Norwood’s long-range strike in stoppage time.
Town, who had switched to 4-4-2, made a double substitution on 54 minutes, bringing on Lee and Ward for Robinson and Norwood.
The move had little effect as Charlton placed two midfield men in front of the defence and looked comfortable as the game entered its closing stages.
Even though there were five minutes of stoppage time, Town failed to find a way through.
For Town boss Mark Robins today’s result was a real kick in the teeth.
“What a difference a couple of days make,” he said. “We were brilliant on Tuesday but today we have been undone by a set-play.
“It feels like a step forward then two back but we have to take these on the chin I am afraid.
“We’ve not had enough quality. We have had plenty of ball in their box and although the way we got it there wasn’t ideal, needs must at times.”
Robins was critical of the pitch, which he felt cut up too easily and made it tough to play attractive football.
“The pitch wasn’t brilliant again,” he added. “You struggle to do things quickly enough and when Charlton play a counter-attack, they will get people close to you and break against you quick, you are always vulnerable. We’ve been lacklustre.”