Check if a value is a number
Written byPhuoc Nguyen
Category
Validator
Created
23 Apr, 2020
Last updated
03 Nov, 2021
Contributors
JavaScript version
isNumber.js
const isNumber = (value) => !isNaN(parseFloat(value)) && isFinite(value);TypeScript version
isNumber.ts
const isNumber = (value: any): number => !isNaN(parseFloat(value)) && isFinite(value);Questions? 🙋
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Phước Nguyễn