23 lines
519 B
Markdown
23 lines
519 B
Markdown
---
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title: Product of numeric values
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tags: math,array
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expertise: intermediate
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author: maciv
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cover: blog_images/travel-mug-1.jpg
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firstSeen: 2020-10-15T21:56:51+03:00
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lastUpdated: 2020-10-22T20:24:04+03:00
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---
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Calculates the product of two or more numbers/arrays.
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- Use `Array.prototype.reduce()` to multiply each value with an accumulator, initialized with a value of `1`.
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```js
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const prod = (...arr) => [...arr].reduce((acc, val) => acc * val, 1);
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```
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```js
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prod(1, 2, 3, 4); // 24
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prod(...[1, 2, 3, 4]); // 24
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```
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