HTML Comments
HTML comments are not displayed in the browser, but they can
help document your HTML source code.
HTML Comment Tag
You can add comments to your HTML source by using the following syntax:
<!-- Write your comments here -->
Notice that there is an exclamation point (!) in the start tag, but not in the
end tag.
Note: Comments are not displayed by the browser, but they can help document your HTML source code.
Add Comments
With comments you can place notifications and reminders in your HTML code:
Example
<!-- This is a comment --><p>This is a paragraph.</p>
<!-- Remember to add more information here -->
Try it Yourself »
Hide Content
Comments can be used to hide content.
This can be helpful if you hide content temporarily:
Example
<p>This is a paragraph.</p><!-- <p>This is another paragraph
</p> --><p>This is a paragraph too.</p>
Try it Yourself »
You can also hide more than one line. Everything between the <!-- and the -->
will be hidden from the display.
Example
Hide a section of HTML code:
<p>This is a paragraph.</p><!--<p>Look at this cool
image:</p>
<img border="0" src="pic_trulli.jpg"
alt="Trulli">--><p>This is a paragraph too.</p>
Try it Yourself »
Comments are also great for debugging HTML, because you can
comment out HTML lines of code, one at a time, to search for errors.
Hide Inline Content
Comments can be used to hide parts in the middle of the HTML code.
Example
Hide a part of a paragraph:
<p>This <!-- great text --> is a paragraph.</p>
Try it Yourself »
HTML Exercises
Test Yourself With Exercises
Exercise:
Use the HTML comment tag to make a comment out of the "This is a comment" text.
<h1>This is a heading</h1>
This is a comment
<p>This is a paragraph.</p>
Submit Answer »
Start the Exercise
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+1
Reference: https://www.w3schools.com/html/html_comments.asp