JavaScript-Course/ass7.html at main · Dhanushpolagani/JavaScript-Course · GitHub

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<!DOCTYPE html>
 <html>
     <head>
         <title>Objects</title>

     </head>
     <body>
         <script>
             const book1={
                 title:'The Courage to Be Disliked',
                 author:'Ichiro Kishimi and Fumitake Koga',
                 ISBN:'978-1501197277',
                 isBorrowed:false,

                 borrow(){
                     this.isBorrowed=true;
                     return `The book borrowed:${this.title}`;

                 },
                 returnBook(){
                     this.isBorrowed=false;
                     return `The book returned:${this.title}`;
                 }
             };

             const book2 = {
                 title:'Kingdom of Ash',
                 author:'Sarah J. Maas',
                 ISBN:'978-1681195773',
                 isBorrowed:false,

                 borrow(){
                     this.isBorrowed=true;
                 },

                 returnBook(){
                     this.isBorrowed=false;
                 }
             };

             const book3={
                 title:'Powerless',
                 author:'Lauren Roberts',
                 ISBN:'978-1665935590',
                 isBorrowed:false,

                 borrow(){
                     this.isBorrowed=true;
                 },

                 returnBook(){
                     this.isBorrowed=false;
                 }
             };

             const library={
                 books:[book1,book2,book3],

                 addBook(book){
                     this.books.push(book);
                 },

                 findBookByISBN(isbn){
                     for (let book of this.books){
                         if (book.ISBN === isbn){
                             return book;
                         }
                     }
                     return null;
                 },

                 listAvailableBooks() {
                     this.books.forEach(book => {
                         if (!book.isBorrowed){
                             console.log(book.title);
                         }
                     });
                 },


                 listBorrowedBooks(){
                     this.books.forEach(book => {
                         if (book.isBorrowed){
                             console.log(book.title);
                         }
                     });

                 }

             };

             console.log("All available books:");
             library.listAvailableBooks();

             console.log("Borrowing 'Powerless'...");
             library.findBookByISBN('978-1665935590').borrow();

             console.log("Available books after borrowing:");
             library.listAvailableBooks();

             console.log("Borrowed books:");
             library.listBorrowedBooks();

         </script>

     </body>
 </html>