HTML Tutorials - Herong's Tutorial Examples - v2.30, by Herong Yang
Entering Comments in HTML Document
This section describes the HTML comment syntax. Comments can be entered in the content part of any non-metadata elements.
If you want to enter comments into your HTML documents, you should follow these guidelines.
1. A single comment must be coded as "<!-- comment_text -->".
2. Comments can be entered anywhere in the content part of any elements except metadata elements.
3. Comments can not be nested.
4. Tag open and close characters, < and > are allowed are comment text.
Here is a simple example of HTML document that matches the above HTML comment syntax requirements:
<!DOCTYPE html> <!-- HTML_Comments_Example.html - Copyright (c) 2009 HerongYang.com. All Rights Reserved. --> <!-- Comment: Start of the document --> <html> <head> <meta charset="iso-8859-1"> <!-- Comment: Metadata elements go here --> <title>Comments Example</title> </head> <body> <!-- Comment: <svg> is a new element introduced in HTML5 --> Here is an example of SVG graphics: <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="60" height="40" viewBox="0 0 152 102"> <rect width="152" height="102" fill="#000000"/> </svg> </body> </html> <!-- Comment: End of the document -->
Table of Contents
Introduction of HTML5 Features
HTML Document Structure and Content
►HTML Document and Elements Syntax
Document Character Set and Encoding
►Entering Comments in HTML Document
Opening and Closing Tags of Elements
Using Character Entity References
Using Numeric Character References
Displayed and Printed HTML Documents
Responsive Design of Web Pages