JavaScript · Junior · Question 62 of 75

How does `"toString" in obj` differ from `Object.hasOwn(obj, "toString")` for `obj = {}`?

✓Correct answer: in is true (found on the prototype), Object.hasOwn is false (not an own property)
2Both are false
3Both are true

Explanation

in checks the whole prototype chain. Object.hasOwn (a safer replacement for obj.hasOwnProperty) checks only the object itself.

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