Pregunta 52

Which statements about findIndex are true? Select all that apply.

It returns the first qualifying indexRespuesta correcta
It returns undefined when nothing qualifies
It returns -1 when nothing qualifiesRespuesta correcta
It returns every qualifying index

Explicación

findIndex reports the index of the first element whose callback is truthy, and it reports -1 when none qualifies. Returning undefined is the no-match behavior associated with find, not findIndex.

Explicación

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