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+---
+title: "Tip: Compare strings regardless of case and accent"
+shortTitle: Case and accent-insensitive string comparison
+type: tip
+tags: javascript,string,comparison
+expertise: intermediate
+author: chalarangelo
+cover: blog_images/memories-of-pineapple-1.jpg
+excerpt: Here's a quick tip on how to compare and sort arrays of strings, ignoring case and accents.
+firstSeen: 2022-07-17T05:00:00-04:00
+---
+
+Comparing and sorting JavaScript strings is rather common. Usually, the use of `String.prototype.localeCompare()` is sufficient for sorting arrays of strings in most scenarios. Dealing with accents and cases can get tricky, however, and lead to unexpected results. This is where `Intl.Collator` comes into play, an object used for language-sensitive string comparison. Using `Intl.Collator.prototype.compare()`, you can sort strings regardless of their case or accent and it can even accept a locale argument.
+
+```js
+const arr = ['ä', 'a', 'b', 'A', 'B', 'Å'];
+
+const localeCompare = (a, b) => a.localeCompare(b);
+const collator = new Intl.Collator();
+const deCollator = new Intl.Collator('de');
+const svCollator = new Intl.Collator('sv');
+
+arr.sort(localeCompare);      // ['a', 'A', 'Å', 'ä', 'b', 'B']
+arr.sort(collator.compare);   // ['a', 'A', 'Å', 'ä', 'b', 'B']
+arr.sort(deCollator.compare); // ['a', 'A', 'Å', 'ä', 'b', 'B']
+arr.sort(svCollator.compare); // ['a', 'A', 'b', 'B', 'Å', 'ä']
+```