JSFiddle - React, Tailwind, and code Playground

by Mohammed Alozaibi

JavaScript

var g = "5b";
var h = 4;
var myNumber = Number(g);
if (isNaN(myNumber)) {
    alert("is not a number");
}
var myNumber2 = Number(h);
if (!isNaN(myNumber2)) {
    alert("it is a number");
}