How to add properties and methods to objects in JavaScript?

WBOY
Release: 2023-08-27 21:29:10
forward
688 people have browsed it

How to add properties and methods to objects in JavaScript?

To add properties and methods to objects in JavaScript, use the prototype attribute.

Example

You can try running the following code to understand how to use the prototype -

<html>
   <head>
      <title>JavaScript prototype property</title>
      <script>
         function book(title, author) {
            this.title = title;
            this.author = author;
         }
      </script>
   </head>
   <body>
      <script>
         var myBook = new book("Amit", "Java");
         book.prototype.price = null;
         myBook.price = 500;

         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>
Copy after login

The above is the detailed content of How to add properties and methods to objects in JavaScript?. For more information, please follow other related articles on the PHP Chinese website!

source:tutorialspoint.com
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template