This is a program which tells you that JavaScript is a beautiful language

AwesomnessInJS.js

var biodata = function(firstName, secondName){
	//Public members::
	this.firstName = firstName;
	this.secondName = secondName;

	//This is an assignment which takes the present context and assigns it to another variable, in this case that
	var that = this;

	//private members:
	var sex = "Male";
	var relationshipStatus = "in a relationship";

	//private methods:
    var getSex = function(){
    	console.log("Person " + that.firstName + " is a " + sex);
    }

    getSex();

    //This is a privileged function which is accessible by the outside world, but it itself has access to the private
    //methods and variables.
    //For instance, sex and relationshipStatus are private variable of the function biodata.
    //getAllInfo (privileged function) provides access to the outside world with all these values
    this.getAllInfo = function(){
    	var allInfo = {};
    	allInfo.firstName = this.firstName;
    	allInfo.secondName = this.secondName;
    	allInfo.sex = sex;
    	allInfo.relationshipStatus = relationshipStatus;
    	//This is a public member in the public function, collegeInfo of biodata and is accessible using this.
    	allInfo.collegeName = this.collegeName;
    	return allInfo;
    }
}

//public method in prototype
biodata.prototype.collegeInfo = function(collegeName){
	this.collegeName = collegeName;
	console.log("Person:" + this.firstName + " studied in " + this.collegeName);
}

var obj = new biodata("Sylvestor", "Stallone");
obj.collegeInfo("University of Miami");
var hackInfo = obj.getAllInfo();
console.log("FirstName:", hackInfo.firstName);
console.log("secondName:", hackInfo.secondName);

//The privileged method provides access to private variables of a function
console.log("sex:", hackInfo.sex);
console.log("relationshipStatus:", hackInfo.relationshipStatus);
console.log("collegeName:", hackInfo.collegeName);