From f676138ab3517fe2d3e33d69dfdd1c7183f9d64f Mon Sep 17 00:00:00 2001 From: Chalarangelo Date: Wed, 6 Jan 2021 22:53:58 +0200 Subject: [PATCH] Add isPowerOfTen --- snippets/isPowerOfTen.md | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 snippets/isPowerOfTen.md diff --git a/snippets/isPowerOfTen.md b/snippets/isPowerOfTen.md new file mode 100644 index 000000000..4ab69c2b3 --- /dev/null +++ b/snippets/isPowerOfTen.md @@ -0,0 +1,18 @@ +--- +title: isPowerOfTen +tags: math,beginner +--- + +Checks if the given number is a power of `10`. + +- Use `Math.log10()` and the modulo operator (`%`) to determine if `n` is a power of `10`. + +```js +const isPowerOfTen = n => Math.log10(n) % 1 === 0; +``` + +```js +isPowerOfTen(1); // true +isPowerOfTen(10); // true +isPowerOfTen(20); // false +```