JavaScript · Middle · Question 75 of 75

What does `arr.with(1, "x")` return for `arr = ["a", "b", "c"]`?

✓Correct answer: A new array ["a", "x", "c"]; arr is unchanged
2It changes arr to ["a", "x", "c"]
3"b", the replaced value

Explanation

with is the immutable counterpart of arr[1] = "x". It supports negative indices like at and throws RangeError for out-of-range ones.

Further reading

MDN: Array.prototype.toSorted() ↗

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