JSFiddle - React, Tailwind, and code Playground

by deepak sisodiya

JavaScript

var alert  = function (str) {
   var st = document.createTextNode(str);
   var p = document.createElement('p');
   p.appendChild(st);
   document.querySelector('body').appendChild(p);
}

var number = 5;
alert(typeof(number));

var boolean = true
alert(typeof(boolean));

var string = "deepak";
alert(typeof(string))

var x;
alert(typeof(x))

var y = null;
alert(typeof(y))

var person = {
    firstName:"John",
    lastName :"Doe",
    id       :5566
};
alert(typeof(person))

function name() {     // name is type undefined
    
}
alert(typeof(name()))

function surname() {     // surname is type String
    return "sisodiya"
}
alert(typeof(surname()))

var date = new Date();
alert(typeof(date))

var cars = ["Saab", "Volvo", "BMW"];
alert(typeof(cars))