Հարց 103

Spot the array-iteration result: for...in is used on ["a", "b"] with no extra properties. What does it yield?

The values a and b
The numeric values 0 and 1
The strings 0 and 1Ճիշտ պատասխան
Two arrays pairing each index with a value

Բացատրություն

Array indexes are enumerable string property keys, so for...in yields strings such as 0 and 1 rather than the element values. Expecting a and b confuses key enumeration with the direct value iteration performed by for...of.

Բացատրություն

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