JavaScript · Middle · Question 32 of 75

What does this code print?

const cfg = Object.freeze({ db: { host: "a" } });
cfg.db.host = "b";
console.log(cfg.db.host);

✓Correct answer: "b": freeze is shallow; the nested object isn't frozen
2"a": freeze freezes the object all the way down
3TypeError: properties of a frozen object can't be changed

Explanation

Object.freeze prevents adding, removing and changing properties of the object itself only. Nested objects remain mutable. Deep freezing is done with a recursive function.

What does this code print?

Explanation

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