JavaScript/ Objects and Methods

// ch26 Objects and Methods

var john = {
	firstName: "John",
	//key: value
	lastName: "Smith",
	birthYear: 1990,
	family: ["jane", "Mark", "Bob"],
	job: "teacher",
	isMarried: false,
	calcAge: function(){//function expression// method of 'john'
		this.age = 2018-this.birthYear;
		}
	};

john.calcAge();
console.log(john);//print
/*
firstName: "John"
lastName: "Smith"
birthYear: 1990
family: (3) ["jane", "Mark", "Bob"]
job: "teacher"
isMarried: false
calcAge: ƒ ()
age: 28
*/

// ch28 Objects and Methods coding challange

var john ={
	firstName:"John",
	mass:92,
	height: 1.95,
	calcBMI: function() {
	this.bmi = this.mass/(this.height*this.height);
	return this.bmi;
	}
}

var mark ={
	firstName:"Mark",
	mass:95,
	height: 1.75,
	calcBMI: function(){
	this.bmi = this.mass/(this.height*this.height);
	return this.bmi;
	}
}




if (john.calcBMI>mark.calcBMI){
	console.log("John's BMI("+john.bmi+") is higher then Mark's");
} else if (john.calcBMI<mark.calcBMI){
	console.log("Mark's BMI("+mark.bmi +") is higher then John's");
}else{
	console.log("they have some BMIs")
}