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.
With comments you can place notifications and reminders in your HTML code:
<h3>Hide Content</h3> Comments can be used to hide content. Which can be helpful if you hide content temporarily: <p>This is a paragraph.</p> <!-- <p>This is another paragraph </p> --> <p>This is a paragraph too.</p>
You can also hide more than one line, everything between the
<!-- and the
--> will be hidden from the display.
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>
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. Hide a part of a paragaph:
<p>This <!-- great text --> is a paragraph.</p>