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snippets/js/s/nth-element.md

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+---
+title: Nth element
+type: snippet
+language: javascript
+tags: [array]
+cover: laptop-plants
+dateModified: 2020-10-21T21:54:53+03:00
+---
+
+Returns the nth element of an array.
+
+- Use `Array.prototype.slice()` to get an array containing the nth element at the first place.
+- If the index is out of bounds, return `undefined`.
+- Omit the second argument, `n`, to get the first element of the array.
+
+```js
+const nthElement = (arr, n = 0) =>
+  (n === -1 ? arr.slice(n) : arr.slice(n, n + 1))[0];
+```
+
+```js
+nthElement(['a', 'b', 'c'], 1); // 'b'
+nthElement(['a', 'b', 'b'], -3); // 'a'
+```