Is finite number
Widely supported version of Number.isFinite. Checks whether a value is a finite number.
Also check out is-non-nan-num, which is similar but does accept Infinity and -Infinity.
Installation
<pnpm|npm|yarn> add is-fin-num
Usage
import isFinNum from 'is-fin-num'
console.log(isFinNum(0)) // => true 🤙
console.log(isFinNum(-123)) // => true 🤙
console.log(isFinNum(Infinity)) // => false ❌
console.log(isFinNum(NaN)) // => false ❌
console.log(isFinNum(0/0)) // => false ❌
console.log(isFinNum('1')) // => false ❌
console.log(isFinNum([])) // => false ❌See test/index.test.js for more use cases.
Browser support
isFinNum relies on isFinite (instead of Number.isFinite) so it should basically work everywhere.
| Browser | Minimum version |
|---|---|
| Firefox | >=1 |
| Safari | >=1 |
| Edge | >=12 |
| Chrome | >=1 |
| Internet Explorer (IE) | >=4 |