Task - TypeScript - Enhanced Library Management System

[akash-coded]

You have been asked to enhance the library management system you previously created in discussion #147. The library wants to include new types of items, such as magazines and newspapers, in addition to books. They also want to ensure that each item in their collection has a unique identifier and a method to display its information in a human-readable format.

Create an interface LibraryItem with the following specifications:

Properties:

• id: number - A unique identifier for the library item.
• title: string - The title of the library item.

Method:

• displayInfo(): string - A method that returns a string containing the information about the library item in a human-readable format.

Implement this interface in the Book class and create two new classes, Magazine and Newspaper, which also implement the LibraryItem interface. Update the Author class to include a unique identifier as well.

Example:

const author1 = new Author(1, "George Orwell", 1903);
const book1 = new Book(101, "1984", author1, 1949);

console.log(book1.displayInfo());

Output:

Book ID: 101, Title: 1984, Author: George Orwell, Publication Year: 1949

[bipin-coded]

Code

interface LibraryItem {
  id: number;
  title: string;
  displayInfo(): string;
}

class AuthorX {
  id: number;
  name: string;
  birthYear: number;

  constructor(id: number, name: string, birthYear: number) {
    this.id = id;
    this.name = name;
    this.birthYear = birthYear;
  }
}

class BookX implements LibraryItem {
  id: number;
  title: string;
  author: AuthorX;
  publicationYear: number;

  constructor(
    id: number,
    title: string,
    author: AuthorX,
    publicationYear: number
  ) {
    this.id = id;
    this.title = title;
    this.author = author;
    this.publicationYear = publicationYear;
  }

  displayInfo(): string {
    return `Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear}`;
  }
}

class Magazine implements LibraryItem {
  id: number;
  title: string;

  constructor(id: number, title: string) {
    this.id = id;
    this.title = title;
  }

  displayInfo(): string {
    return `Magazine ID: ${this.id}, Title: ${this.title}`;
  }
}

class Newspaper implements LibraryItem {
  id: number;
  title: string;

  constructor(id: number, title: string) {
    this.id = id;
    this.title = title;
  }

  displayInfo(): string {
    return `Newspaper ID: ${this.id}, Title: ${this.title}`;
  }
}

const authorX = new AuthorX(1, "George Orwell", 1903);
const bookX = new BookX(101, "1984", authorX, 1949);

console.log(bookX.displayInfo());

Output

[SathyaGanes]

code

interface LibraryItem {
  id: number;
  title: string;
  displayInfo(): string;
}

class Author {
  constructor(public id: number, public name: string, public birthYear: number) {}
}

class Book implements LibraryItem {
  constructor(public id: number, public title: string, public author: Author, public publicationYear: number) {}

  displayInfo(): string {
    return `Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear}`;
  }
}

class Magazine implements LibraryItem {
  constructor(public id: number, public title: string, public issueNumber: number, public publicationYear: number) {}

  displayInfo(): string {
    return `Magazine ID: ${this.id}, Title: ${this.title}, Issue Number: ${this.issueNumber}, Publication Year: ${this.publicationYear}`;
  }
}

class Newspaper implements LibraryItem {
  constructor(public id: number, public title: string, public publicationDate: Date) {}

  displayInfo(): string {
    return `Newspaper ID: ${this.id}, Title: ${this.title}, Publication Date: ${this.publicationDate.toDateString()}`;
  }
}

const author1 = new Author(1, "George Orwell", 1903);
const book1 = new Book(101, "1984", author1, 1949);
const magazine1 = new Magazine(201, "National Geographic", 100, 2022);
const newspaper1 = new Newspaper(301, "The New York Times", new Date("2023-04-23"));

console.log(book1.displayInfo());
console.log(magazine1.displayInfo());
console.log(newspaper1.displayInfo());

OUTPUT

[sam2elect]

CODE

interface LibraryItem {
    id: number;
    title: string;
    displayInfo(): string;
}

class AuthorTs {
    id: number;
    name: string = '';
    birthYear: number = 0;

    constructor(id: number, name: string = '', birthYear: number = 0) {
        this.id = id;
        this.name = name;
        this.birthYear = birthYear;
    }
}

class BookTs implements LibraryItem {
    id: number;
    title: string = '';
    author: AuthorTs = new AuthorTs(0);
    publicationYear: number = 0;

    constructor(id: number, title: string = '', author: AuthorTs = new AuthorTs(0), publicationYear: number = 0) {
        this.id = id;
        this.title = title;
        this.author = author;
        this.publicationYear = publicationYear;
    }
    copiesAvailable: number;
    borrowCopy(): void {
        throw new Error("Method not implemented.");
    }
    returnCopy(): void {
        throw new Error("Method not implemented.");
    }

    displayInfo(): string {
        return `Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear}`;
    }
}

class MagazineTs implements LibraryItem {
    id: number;
    title: string = '';
    issueNumber: number = 0;
    publicationDate: Date = new Date();

    constructor(id: number, title: string = '', issueNumber: number = 0, publicationDate: Date = new Date()) {
        this.id = id;
        this.title = title;
        this.issueNumber = issueNumber;
        this.publicationDate = publicationDate;
    }
    author: AuthorTs;
    publicationYear: number;
    copiesAvailable: number;
    borrowCopy(): void {
        throw new Error("Method not implemented.");
    }
    returnCopy(): void {
        throw new Error("Method not implemented.");
    }

    displayInfo(): string {
        return `Magazine ID: ${this.id}, Title: ${this.title}, Issue Number: ${this.issueNumber}, Publication Date: ${this.publicationDate}`;
    }
}

class NewspaperTs implements LibraryItem {
    id: number;
    title: string = '';
    publicationDate: Date = new Date();

    constructor(id: number, title: string = '', publicationDate: Date = new Date()) {
        this.id = id;
        this.title = title;
        this.publicationDate = publicationDate;
    }
    author: AuthorTs;
    publicationYear: number;
    copiesAvailable: number;
    borrowCopy(): void {
        throw new Error("Method not implemented.");
    }
    returnCopy(): void {
        throw new Error("Method not implemented.");
    }

    displayInfo(): string {
        return `Newspaper ID: ${this.id}, Title: ${this.title}, Publication Date: ${this.publicationDate}`;
    }
}

const author5 = new AuthorTs(1, "George Orwell", 1903);
const book5 = new BookTs(101, "1984", author5, 1949);
console.log(book5.displayInfo());

const magazine5 = new MagazineTs(201, "National Geographic", 123, new Date(2023, 3, 1));
console.log(magazine5.displayInfo());

const newspaper5 = new NewspaperTs(301, "The New York Times", new Date(2023, 3, 23));
console.log(newspaper5.displayInfo());

OUTPUT

[RevathiSundaramoorthy]

Code

interface LibraryItem {
    id: number,
    title: string
}

class AuthorTS1 {
    id: number;
    name: string;
    birthYear: number;
    constructor(id: number,name: string, birthYear:number) {
        this.id = id;
        this.name = name; 
        this.birthYear = birthYear;  
    }
}

class BookTS1 {
    libraryitem: LibraryItem;
    author: AuthorTS1;
    publicationYear: number;
    constructor(libraryitem: LibraryItem,author: AuthorTS1,publicationYear: number) {
        this.libraryitem = libraryitem;
        this.author = author;
        this.publicationYear = publicationYear;
    }
    displayInfo(): string {
        return ("Book ID: " + this.libraryitem.id + ", Title: " + this.libraryitem.title + ", Author: " + this.author.name + ", Publication Year: " + this.publicationYear);
}
}
//create magazine and newspaper classes
class Magazine {
    libraryitem: LibraryItem;
    constructor(libraryitem: LibraryItem) {
        this.libraryitem = libraryitem;
    }
}
class Newspaper {
    libraryitem: LibraryItem;
    constructor(libraryitem: LibraryItem) {
        this.libraryitem = libraryitem;
    }
}
//create instances of book and author class
const authorts1 = new AuthorTS1(1,"George Orwell", 1903);
const bookts1 = new BookTS1({id:101,title:"1984"}, authorts1, 1949);
console.log(bookts1.displayInfo());
const bookts2 = new BookTS1({id:102,title:"Animal Farm"}, authorts1, 1945);
console.log(bookts2.displayInfo());
const bookts3 = new BookTS1({id:103,title:"The Alchemist"}, new AuthorTS1(2,"Paulo Coelho", 1947), 1988);
console.log(bookts3.displayInfo());

Screenshot

[saugatacr7]

interface LibraryItem {
id: number;
title: string;
}

class AuthorX {
id: number;
name: string;
birthYear: number;

constructor(id: number, name: string, birthYear: number) {
this.id = id;
this.name = name;
this.birthYear = birthYear;
}
}

class BookX implements LibraryItem {
id: number;
title: string;
author: AuthorX;
publicationYear: number;

constructor(id: number, title: string, author: AuthorX, publicationYear: number) {
this.id = id;
this.title = title;
this.author = author;
this.publicationYear = publicationYear;
}

displayInfo(): string {
return Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author}, Publication Year: ${this.publicationYear};
}
}

const authorx = new AuthorX(1, "George Orwell", 1903);
const bookx = new BookX(101, "1984", authorx, 1949);

console.log(bookx.displayInfo());

[vk0027]

interface LibraryItem {
id: number;
title: string;
displayInfo(): string;
}

class AuthorX {
id: number;
name: string;
birthYear: number;

constructor(id: number, name: string, birthYear: number) {
this.id = id;
this.name = name;
this.birthYear = birthYear;
}
}

class BookX implements LibraryItem {
id: number;
title: string;
author: AuthorX;
publicationYear: number;

constructor(
id: number,
title: string,
author: AuthorX,
publicationYear: number
) {
this.id = id;
this.title = title;
this.author = author;
this.publicationYear = publicationYear;
}

displayInfo(): string {
return Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear};
}
}

class Magazine implements LibraryItem {
id: number;
title: string;

constructor(id: number, title: string) {
this.id = id;
this.title = title;
}

displayInfo(): string {
return Magazine ID: ${this.id}, Title: ${this.title};
}
}

class Newspaper implements LibraryItem {
id: number;
title: string;

constructor(id: number, title: string) {
this.id = id;
this.title = title;
}

displayInfo(): string {
return Newspaper ID: ${this.id}, Title: ${this.title};
}
}

const authorX = new AuthorX(1, "George Orwell", 1903);
const bookX = new BookX(101, "1984", authorX, 1949);

console.log(bookX.displayInfo());

[mownica-p]

code

interface LibraryItem {
    id: number;
    title: string;
    displayInfo(): string;
  }
  class AuthorX {
    id: number;
    name: string;
    birthYear: number;
  
    constructor(id: number, name: string, birthYear: number) {
      this.id = id;
      this.name = name;
      this.birthYear = birthYear;
    }
  }
  
  class BookX implements LibraryItem {
    id: number;
    title: string;
    author: AuthorX;
    publicationYear: number;

    constructor(id: number, title: string, author: AuthorX, publicationYear: number ) {
      this.id = id;
      this.title = title;
      this.author = author;
      this. publicationYear = publicationYear;
    }
  
    displayInfo(): string {
        return `Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear}`;
      }
    }
    
  
   class Magazine implements LibraryItem {
    id: number;
    title: string;
   
  
    constructor(id: number, title: string) {
      this.id = id;
      this.title = title;
      
    }
  
    displayInfo(): string {
        return `Magazine ID: ${this.id}, Title: ${this.title}`;
      }
    }
  
  class Newspaper implements LibraryItem {
    id: number;
    title: string;
    date: number;
    editor: string;
  
    constructor(id: number, title: string, date: number, editor: string) {
      this.id = id;
      this.title = title;
      this.date = date;
      this.editor = editor;
    }
  
    displayInfo(): string {
      return `Newspaper: ${this.title}, Id: ${this.id}, Date:${this.date}, Editor: ${this.editor}`;
    }
  }
  const authorX = new AuthorX(1525, "J.K. Rowling", 1965);
  const bookX = new BookX(1519, "Harry Potter and the Philosopher's Stone", authorX, 1997);

  console.log(bookX.displayInfo());
  

ScreenShot

[Prathmesh06]

Code

class AuthorTs {
    name : string;
    birthYear : number;

    constructor(name: string, birthYear: number) {
        this.name = name;
        this.birthYear = birthYear;
    }

}
const author1 = new AuthorTs("George Orwell", 1903);
const author2 = new AuthorTs("George Borsing", 1902);

class BookTs implements LibraryItem {
    id: number;
    title : string;
    author : AuthorTs;
    publicationYear : number;

    constructor(id: number, title : string, author : AuthorTs, publicationYear : number) {
        this.id = id;
        this.title = title;
        this.author = author;
        this.publicationYear = publicationYear;
    }

    displayInfo(): string {
        return `id :, ${this.id}, title :, ${this.title} author :, ${this.author.name}, publicationYear : ${this.publicationYear}`;
    }
}

class Magazine implements LibraryItem {

    id: number;
    title: string;
    issue: string
    publicationYear: number;

    constructor(id, title, issue, publicationYear) {
        this.id = id
        this.title = title
        this.issue = issue
        this.publicationYear = publicationYear
    }

    displayInfo(): string {
        return `Magazine id: ${this.id}, Magazine title: ${this.title}, Magazine issue: ${this.issue}, Magazine publicationYear : ${this.publicationYear}`;
    }

}

class Newspaper implements LibraryItem {

    id : number;
    title : string;
    date : Date;

    constructor(id : number, title : string, date : Date) {
        this.id = id;
        this.title = title;
        this.date = date;
    }

    displayInfo(): string {
        return `Newspaper id : ${this.id}, Newspaper title : ${this.title}, Newspaper date : ${this.date}`;
    }
}

const book1 = new BookTs(101,"1984", author1, 1949);
const book2 = new BookTs(102,"1986", author2, 1959);
const book3 = new BookTs(103, "1985", author1, 1946);

console.log(book1);
console.log(book1.displayInfo());
console.log(book2);
console.log(book2.displayInfo());
console.log(book3);
console.log(book3.displayInfo());


const magazine1 = new Magazine(1, "1984", "printing mistake", 1994)
const magazine2 = new Magazine(2, "Outer space", "spelling misstake", 2004)
const magazine3 = new Magazine(3, "Lost in thinking", "title name space", 2001)

console.log(magazine1.displayInfo());
console.log(magazine2.displayInfo());
console.log(magazine3.displayInfo());

const newsletter1 = new Newspaper(1, "The new york times", new Date(2023, 3, 28, 5, 14, 30));
const newsletter2 = new Newspaper(2, "indian economy", new Date(2023, 2, 28, 5, 14, 30));

console.log(newsletter1.displayInfo());
console.log(newsletter2.displayInfo());

Output

[Ravi-710]

interface LibraryItem {
id: number;
title: string;
displayInfo(): string;
}

class Authors {
id: number;
name: string;
birthYear: number;

constructor(id: number, name: string, birthYear: number) {
this.id = id;
this.name = name;
this.birthYear = birthYear;
}
}

class Books implements LibraryItem {
id: number;
title: string;
author: Authors;
publicationYear: number;

constructor(
id: number,
title: string,
author: Authors,
publicationYear: number
) {
this.id = id;
this.title = title;
this.author = author;
this.publicationYear = publicationYear;
}

displayInfo(): string {
return Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear};
}
}

class Magazine implements LibraryItem {
id: number;
title: string;

constructor(id: number, title: string) {
this.id = id;
this.title = title;
}

displayInfo(): string {
return Magazine ID: ${this.id}, Title: ${this.title};
}
}

class Newspaper implements LibraryItem {
id: number;
title: string;

constructor(id: number, title: string) {
this.id = id;
this.title = title;
}

displayInfo(): string {
return Newspaper ID: ${this.id}, Title: ${this.title};
}
}

const authorX = new Authors(1, "George Orwell", 1903);
const books = new Books(101, "1984", authorX, 1949);

console.log(books.displayInfo());

[saugatacr7]

interface LibraryItem {
id: number;
title: string;
displayInfo(): string;
}

class AuthorEL {
id: number;
name: string;
birthYear: number;

constructor(id: number, name: string, birthYear: number) {
this.id = id;
this.name = name;
this.birthYear = birthYear;
}
}

class BookEL implements LibraryItem {
id: number;
title: string;
author: AuthorEL;
publicationYear: number;

constructor(
id: number,
title: string,
author: AuthorEL,
publicationYear: number
) {
this.id = id;
this.title = title;
this.author = author;
this.publicationYear = publicationYear;
}

displayInfo(): string {
return Book ID: ${this.id}, Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear};
}
}

class MagazineEL implements LibraryItem {
id: number;
title: string;
issue: number;

constructor(id: number, title: string, issue: number) {
this.id = id;
this.title = title;
this.issue = issue;
}

displayInfo(): string {
return Magazine ID: ${this.id}, Title: ${this.title}, Issue: ${this.issue};
}
}

class NewspaperEL implements LibraryItem {
id: number;
title: string;
date: string;

constructor(id: number, title: string, date: string) {
this.id = id;
this.title = title;
this.date = date;
}

displayInfo(): string {
return Newspaper ID: ${this.id}, Title: ${this.title}, Date: ${this.date};
}
}

const authorEL = new AuthorEL(1, "George Orwell", 1903);
const bookEL = new BookEL(1, "1984", authorEL, 1949);
const magazineEL = new MagazineEL(1, "National Geographic", 1);
const newspaperEL = new NewspaperEL(1, "The New York Times", "2020-01-01");

console.log(bookEL.displayInfo());
console.log(magazineEL.displayInfo());
console.log(newspaperEL.displayInfo());

[basu-cse]

interface LibraryItem {
id: number;
title: string;
}
class AuthorTS {
public name: string;
public birthYear: number;

constructor(name: string, birthYear: number) {
  this.name = name;
  this.birthYear = birthYear;
}

}

class BookTS {
public title: string;
public author: AuthorTS;
public publicationYear: number;

constructor(title: string, author: AuthorTS, publicationYear: number) {
  this.title = title;
  this.author = author;
  this.publicationYear = publicationYear;
}

public getBookInfo(): string {
  return `${this.title} by ${this.author.name}, published in ${this.publicationYear}`;
}

}

const author12 = new AuthorTS("George Orwell", 1903);

console.log(author12);

const book12 = new BookTS("1984", author12, 1949);
console.log(book12.getBookInfo());

[Ruchiarth]

// Task - TypeScript - Enhanced Library Management System #148
// You have been asked to enhance the library management system you previously created in discussion #147. 
//The library wants to include new types of items, such as magazines and newspapers, in addition to books. 
//They also want to ensure that each item in their collection has a unique identifier and a method to display 
//its information in a human-readable format.

// Create an interface LibraryItem with the following specifications:

// Properties:

// id: number - A unique identifier for the library item.
// title: string - The title of the library item.
// Method:

// displayInfo(): string - A method that returns a string containing the information about the library item in a human-readable format.

interface LibraryItemEL{
    id:number;
    title:string;
    displayInfo(): string;
   
}
// Implement this interface in the Book class and create two new classes, Magazine and Newspaper, which also implement the LibraryItem interface.
//  Update the Author class to include a unique identifier as well.



// Output:



class myAuthorEL {

    name :string;
    birthYear : number;

    constructor(name:string,birthYear:number)
    {
        this.name= name;
        this.birthYear = birthYear;
    }

}

//Books 
class mybookEL implements LibraryItemEL{
    id:number;
    title :string;
    author :myAuthorEL ;
    publicationYear:number;

    constructor(id:number,title:string,author:myAuthorEL , publicationYear:number)
    {   this.id=id;
        this.title = title;
        this.author = author;
        this.publicationYear=publicationYear;

    }
    displayInfo():string{
                return "Book ID: "+this.id+", Title: "+this.title+", Author: "+this.author.name+", Publication Year: "+this.publicationYear;
            }

}


//For Magazines 
class mymagEL implements LibraryItemEL{
    id:number;
    title :string;
   
    issue:number;

    constructor(id:number,title:string, issue:number)
    {   this.id=id;
        this.title = title;
        this.issue=issue;

    }
    displayInfo():string{
                // return "MagID: "+this.id+", Title: "+this.title+", Issue: "+this.issue;
                return `MagID: ${this.id} ,Author : ${this.title} , Issue: ${this.issue}';    `
            }

}

//Newspaper 
class mynewspaperEL implements LibraryItemEL{
    id:number;
    title :string;
    date:string;

    constructor(id:number,title:string,date:string)
    {   this.id=id;
        this.title = title;
        this.date= date;

    }
    displayInfo():string{
                return "Newspaper ID: "+this.id+", Title: "+this.title+", Date: "+this.date;
              }

}
// Example:

// const author1 = new Author(1, "George Orwell", 1903);
// const book1 = new Book(101, "1984", author1, 1949);

// console.log(book1.displayInfo());

const myauthor1 = new myAuthorEL("George Orwell", 1903);
const mybook1 = new mybookEL(101, "1984", myauthor1, 1949);

console.log(mybook1.displayInfo());
// Book ID: 101, Title: 1984, Author: George Orwell, Publication Year: 1949

const magobj = new mymagEL(101,"The Vogue",4023);
console.log(magobj.displayInfo());

const npobj = new mynewspaperEL(102,"The Indian Express","04th May 2023");
console.log(npobj.displayInfo());

[kumarneeraj89]

CODE

interface LibraryItem {
    id: number;
    title: string;

    displayInfo(): string;
}


class EBook2Ts implements LibraryItem{
    id: number;
    title: string;
    author: EAuthorTs;
    publicationYear: number;

    constructor(id: number, title: string, author: EAuthorTs, publicationYear: number){
        this.title  = title;
        this.author = author;
        this.publicationYear = publicationYear;
        this.id = id;
    }

    displayInfo(): string{
        return `Book ID: ${this.id} Title: ${this.title}, Author: ${this.author.name}, Publication Year: ${this.publicationYear}.`
    }
};

class Magazine implements LibraryItem{
    id: number;
    title: string;

    constructor(id: number, title: string){
        this.id = id;
        this.title = title;
    }

    displayInfo():string{
        return `Book ID: ${this.id} Title: ${this.title}`
    }
}

class Newspapaer implements LibraryItem{
    id: number;
    title: string;

    constructor(id: number, title: string){
        this.id = id;
        this.title = title;
    }

    displayInfo(): string{
        return "true"
    }
}


class EAuthorTs{

    id: number;
    name: string;
    birthYear: number;

    constructor(id: number,name: string,birthYear: number){
        this.id =  id;
        this.name = name;
        this.birthYear = birthYear;
    }
}


const Eauthor1ts = new EAuthorTs(1, "George Orwell", 1903);
const Ebook2ts = new EBook2Ts(101, "1984", Eauthor1ts , 1949);
//console.log(Eauthor1ts)


console.log(Ebook2ts.displayInfo());

screenshot