JavaScript · Junior · Question 75 of 75

What does `["a", "b", "c"].at(-1)` return?

✓Correct answer: "c"
2undefined
3"a"

Explanation

at accepts negative indices counting from the end, a cleaner alternative to arr[arr.length - 1]. arr[-1] just looks for a property named "-1".

Further reading

MDN: Array.prototype.at() ↗

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