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Frage 55

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

  1. true
  2. falseRichtige Antwort
  3. undefined
  4. It skips returning a value

Erklärung

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