The comment tag is used to insert comments in the source code. Comments are not meant to be displayed when the webpage is rendered by the web browser. It is a good practice to use comments to add notes to your HTML code. Doing so can help you when you edit the source code at a later time.
To add a comment in your code, you start the comment you use the following sequence of characters: <!--, and to end the comment you use the following sequence of characters: -->, such as in this <!-- example of a comment. -->
It is also a good idea to use comments in your scripting code. This is to ensure that the code does not display as a text for browsers that do not have support for the client side scripting language. Here is an example:
<script type="text/javascript">
<!--
function popUp() {
alert("How are you today!")
}
//-->
</script>Note: To ensure that browsers do not render comments and handle them appropriately, make sure the comments begin with <!--, end with --> and do not contain -- or > within the comment.
