Prepare repository for merge

javascript/snippets/prod.md

@@ -0,0 +1,20 @@
+---
+title: Product of numeric values
+type: snippet
+tags: [math]
+cover: travel-mug-1
+dateModified: 2020-10-22T20:24:04+03:00
+---
+
+Calculates the product of two or more numbers/arrays.
+
+- Use `Array.prototype.reduce()` to multiply each value with an accumulator, initialized with a value of `1`.
+
+```js
+const prod = (...arr) => [...arr].reduce((acc, val) => acc * val, 1);
+```
+
+```js
+prod(1, 2, 3, 4); // 24
+prod(...[1, 2, 3, 4]); // 24
+```