Javascript Inheritance

inherits.js

/**
 * Created by intelligrape on 17/7/14.
 */
Function.prototype.inherits = function (parent) {
    "use strict";
    this.prototype = new parent();
    this.constructor = this;
    this.prototype.parent = parent.prototype
}
function User(name) {
    "use strict";
    var _uname = name;
    this.getName = function () {
        return _uname;
    }
    this.uinfo = "I am parent"; //public
}
User.prototype.getInfo = function () {
    "use strict";
    return this.uinfo;
}

function Employee(name, salary) {
    "use strict";
    var _uname = name;
    this.getName = function () {
        return _uname;
    }
    this.salary = 100;
    this.getSalary = function () {
        return salary;
    }
    this.setSalary = function (sal) {
        salary = sal;
    }
    this.uinfo = "I am child...";

}
Employee.inherits(User)

var user = new User("deepak");
console.log(user.getName())
console.log(user.getInfo())
var employee = new Employee("rishabh");
console.log(employee.getName())
console.log(employee.getInfo())
//console.log(employee.constructor.parent.getDatacall())