Answered by : joo-neves

// Another option is typeof which return a string
if (typeof(val) === 'number') {	// Guess what, it's a bloody number!
}

Source : | Last Update : Sat, 04 Jul 20

Answered by : uninterested-unicorn-s6s18hx8q0tw

const checkInputIfNumber = isNaN(0924891242a)
console.log(checkInputIfNumber) //returns true

Source : | Last Update : Wed, 13 Apr 22

Answered by : yawning-yak-3ni5fix07qyo

import sys
def checkNum(number): try: number = float(number) except ValueError: print("That is not a float.") sys.exit() return number

Source : https://stackoverflow.com/questions/55446197/reject-letters-and-only-allow-number-inputs-enter-first-and-second-number-in-p | Last Update : Tue, 30 Aug 22