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السؤال 55

What does an empty array return from some when given any ordinary predicate callback?

  1. true
  2. falseالإجابة الصحيحة
  3. undefined
  4. It skips returning a value

الشرح

With no elements, there cannot be an element whose callback result is truthy, so some returns false. Returning true would confuse the existential rule of some with the vacuous all-elements rule used by every.

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السؤال 55: What does an empty array return from some when given any… · JavaScript Fundamentals · Questena