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<!DOCTYPE html> <html> <head> <title>User-defined objects</title> <script type="text/javascript">// Define a function which will work as a method function addPrice(amount){ this.price = amount; } function book(title, author){ this.itle = title; this.author = author; this.addPrice = addPrice; // Assign that method as property. } </script> </head> <body> <script type="text/javascript"> varmyBook = new book("5 Points Someone", "ChetanBhagat"); myBook.addPrice(150); document.write("Book Title is : " + myBook.title + "<br>"); document.write("Book Author is : " + myBook.author + "<br>"); document.write("Book Price is : " + myBook.price + "<br>"); </script> </body> </html>