677. Array.from with length Object

Easy•

Predict the output.

const a = Array.from({ length: 3 }, (_, i) => i)
console.log(a.join('-'))

What is printed in the console?

0-1-21-2-30,1,2undefined

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Easy•

Predict the output.

const a = Array.from({ length: 3 }, (_, i) => i)
console.log(a.join('-'))

0-1-21-2-30,1,2undefined

Select an option and submit your answer.

Next ProblemAuto-advance on correct answer