Rename js snippets

snippets/js/s/array-without-last-element.md

@@ -0,0 +1,20 @@
+---
+title: Array without last element
+type: snippet
+language: javascript
+tags: [array]
+cover: red-light
+dateModified: 2020-11-03T21:46:13+02:00
+---
+
+Returns all the elements of an array except the last one.
+
+- Use `Array.prototype.slice()` to return all but the last element of the array.
+
+```js
+const initial = arr => arr.slice(0, -1);
+```
+
+```js
+initial([1, 2, 3]); // [1, 2]
+```