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Multiple ChoiceIntermediate 30s

isNaN vs Number.isNaN

Choose the best answer for: NaN checking
Options
  1. 1Number.isNaN and isNaN behave the same way
  2. 2Number.isNaN is stricter because it coerces
  3. 3Number.isNaN does not coerce; isNaN coerces first
  4. 4Number.isNaN coerces its argument to a number
javascriptintermediate

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