JavaScript · Senior · Question 71 of 75

How do you sort names correctly for a given language?

const collator = new Intl.Collator("uk", { sensitivity: "base" });
names.sort(collator.compare);

✓Correct answer: With Intl.Collator (or localeCompare), which follows the language's alphabet rules
2With sort() without a comparator
3With a > b ? 1 : -1

Explanation

Default sort compares UTF-16 code units, so "Ä", "ї" or uppercase letters end up in wrong places. numeric: true also sorts "item2" before "item10".

Further reading

MDN: Intl ↗

Test yourself

Take the JavaScript · Senior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.