Rename js snippets

snippets/js/s/last-n-elements.md

@@ -0,0 +1,21 @@
+---
+title: Last n elements
+type: snippet
+language: javascript
+tags: [array]
+author: chalarangelo
+cover: fort-lamp
+dateModified: 2022-07-23T05:00:00-04:00
+---
+
+Gets the last `n` elements of an array.
+
+- Use `Array.prototype.slice()` with a start value of `-n` to get the last `n` elements of `arr`.
+
+```js
+const lastN = (arr, n) => arr.slice(-n);
+```
+
+```js
+lastN(['a', 'b', 'c', 'd'], 2); // ['c', 'd']
+```