JSFiddle - React, Tailwind, and code Playground

JavaScript

var isANumber = (string) => {
  return Number.isNaN(+string) 
      ? console.log(`${string} is not a number`) 
      : console.log(`${string} is a number`)
};

// place your string here, the function will evaluate if it's a number or not
isANumber('Hello World')