The Bantams remain three points off an automatic promotion spot and will take a two-goal lead to Villa Park in the return leg of their Capital One Cup semi-final clash with Aston Villa on January 22.
Phil Parkinson's side slipped up 2-0 at struggling Barnet in their last league outing, but Darby insists the club's sensational cup upsets have not been a distraction.
"I don't think they have been at all," Darby told Press Association Sport. "I can understand people thinking the Villa game was on our minds at Barnet, but it wasn't.
"I think that's what we've done well this year, the fact that we can change our focus from the league to the cup and put things to one side and that's what we've done.
"We're only three points off the automatic promotion places and we're still in a good position, so I think we've done well so far this season.
"We've had quite a few injuries this season, but we've got a good squad here and when players have been called on we've done well and we have a great team spirit, so what ever team the gaffer picks everyone will be ready."
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