006_objects-oops.md

Objects and Oops

q01

Given an array of objects of student's marks:

• Print the name and total marks of each student.
• Print the name of student whose total marks is highest.
• Print the name of student whose total marks is lowest.
• Print the average marks of the class in computer subject.
• Print the grades of all students:
  Grade A if total marks is higher than or equal to 75%,
  Grade B if higher than or equal to 60%,
  Grade C if higher than or equal to 35%,
  Grade D if lower than 35%.
• Print the total number of students passed and their names. Pass when total marks is greater than 35%.

const studentDetails = [
	{
		roll: "1",
		name: "Rohan Singh",
		maths: 86,
		science: 90,
		english: 75,
		computer: 85
	},
	{
		roll: "2",
		name: "Ritvik Patel",
		maths: 27,
		science: 30,
		english: 35,
		computer: 30
	},
	{
		roll: "3",
		name: "Neha Maurya",
		maths: 75,
		science: 69,
		english: 40,
		computer: 75
	},
	{
		roll: "4",
		name: "Mohit Verma",
		maths: 21,
		science: 31,
		english: 45,
		computer: 40
	},
	{
		roll: "5",
		name: "Karan Trivedi",
		maths: 70,
		science: 80,
		english: 35,
		computer: 60
	}
];

q02

Salary calculation using OOPS concept.

• Create a Class using ES6 in JavaScript named Employee and assign necessary
  data members and methods such as name, id, basic salary, HRA, Allowances; define getSalary method which will return the net salary.
• Create two Instances of Employee with all necessary details.
• Call the getSalary method of each instance and return the net salary based on your computation.

q03

Bank Account (Object Oriented Programming in JavaScript)

• Create a class and define data members such as name, bank account number,
  account balance, account type, ifsc and name it as BankAccount.
• Create three Instances(three customers) of BankAccount with all necessary details.
• Print the name of customers and their account balances.
• Calculate the average account balance from all the instances.

q04

Given an array of objects of items in cart, print:

• the total No. of items
• the total cart value
• the total discounted value(sum of dicounted values on each item) based on the given discount
• total tax amount (18% tax, calculated on total cart value)

const cartItems = [
	{
		id: "101",
		name: "Oreo",
		count: 2,
		price: 30.0,
		discount: 0.18
	},
	{
		id: "102",
		name: "Red Bull",
		count: 1,
		price: 99.0,
		discount: 0.15
	},
	{
		id: "103",
		name: "Dairy Milk Silk",
		count: 3,
		price: 175.0,
		discount: 0.05
	},
	{
		id: "104",
		name: "Pulse Candy Pack",
		count: 1,
		price: 135.0,
		discount: 0.2
	}
];