JavaScriptSuperSubClasses.js

var JavaScriptSuperClass = function(count){
	this.count = count;
};
JavaScriptSuperClass.prototype.increase = function(){
	this.count++;
};
var JavaScriptSubClass = function(count){
	JavaScriptSuperClass.call(this, count);
};
JavaScriptSubClass.prototype = Object.create(JavaScriptSuperClass.prototype);
JavaScriptSubClass.prototype.constructor = JavaScriptSubClass;
JavaScriptSubClass.prototype.decrease = function(){
	this.count--;
};
var obj = new JavaScriptSubClass(10);
console.log(obj.constructor); //functin JavaScriptSubClass(count)