⏱ 0:04est. 3 min

Chapter 66- 'tyepof', 'instaceof', and Figuring Out What Something Is

Notes

var a = 3;
console.log(typeof a); //number

var b = ‘Hello';
console.log(typeof b); //string

var c = {};
console.log(typeof c); //object

var d = [];
console.log(typeof d); //object //weird
console.log(Object.prototype.toString.call(d)); //object Array //better

function Person(name){
	this.name = name;
}

var e = new Person(‘Jane');
console.log(typeof e); // object

console.log(e instanceof Person); //true
console.log(typeof undefined); //undefined // makes sense
console.log(typeof null); //object // a bug since, like , forever..

var z = function() { };
console.log(typeof z); //function