HTML Comments

Comment tags are used to insert comments in the HTML source code.

---

HTML Comment Tags

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 opening tag, but not in the closing tag.

Note: Comments are not displayed by the browser, but they can help document your HTML source code.

Conditional Comments

You might stumble upon conditional comments in HTML:

<!--[if IE 9]>
    .... some HTML here ....
<![endif]-->

Conditional comments defines some HTML tags to be executed by Internet Explorer only.