Overview
The HTML comment tag is used to insert comments in the source code of the page. Anything placed in the space between the two opening and closing tag is considered a comment and is not displayed in the browser.
<!-- This is a comment where we make notes about our code -->
<p>This is a paragraph.</p>Browsers will not display comments on the page, but they can still be seen in the source code. This is most often used to write notes about the code itself for future reference. However, it can also be used to keep something from showing on the page temporarily, which can then be uncommented at some point and used again without the need to re-write the code.
<!-- <p>This is a hidden paragraph.</p> -->
<p>This is a <!-- partially hidden --> paragraph.</p>The comment tag can also be used across several lines of code to “comment it all out”.
<!--
<h1>This is our hidden heading</h1>
<p>And this is our hidden paragraph</p>
-->A few things about HTML comments:
- A comment cannot be placed inside another comment
- The double-dash sequence cannot appear inside the comment except as part of the opening and closing tag
- The opening and closing tags of a comment cannot have spaces separating their characters; having a space directly before or after is fine
HTML Notes:
- In our HTML section the term “tag” and “element” are often used interchangeably to refer to both the tag used to create a page element and the element created by the tag (<p> tag = <p> element = paragraph on the page)
- HTML5 is not case sensitive; so <P> is the same as <p>, <H1> is the same as <h1>
- Global attributes can be used with all HTML tags and are therefore not mentioned on every tag page
- To write clean, readable HTML code, it is best to use indentation whereas elements within elements are indented (tabbed or spaces) to create something that looks like a project outline
- The browser will automatically remove any extra spaces and lines in your HTML code when the page is displayed
- Double quotes or single quotes can be used around HTML attribute values, but when the attribute value itself contains one form of quote, it will be necessary to use the other around the attribute
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.