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javascript/snippets/is-power-of-ten.md

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+---
+title: Number is power of ten
+type: snippet
+tags: [math]
+author: chalarangelo
+cover: boulder-beach
+dateModified: 2021-01-06T22:53:58+02:00
+---
+
+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
+```