Comment is a piece of code which is ignored by any web browser. It is a good practice to add comments into your HTML code, especially in complex documents, to indicate sections of a document, and any other notes to anyone looking at the code. Comments help you and others understand your code and increases code readability.
HTML comments are placed in between <!– … –> tags. So any content placed with-in <!– … –> tags will be treated as comment and will be completely ignored by the browser.
So far we have seen single line comments, but HTML supports multi-line comments as well.
You can comment multiple lines by the special beginning tag <!– and ending tag –> placed before the first line and end of the last line as shown in the given example below.