Comments in HTML help you explain your code. You can add notes without showing anything in the browser.
Table of Content
Understand How Comments Work in HTML
Comments are text notes. Browsers ignore them. These notes do not affect page layout.
HTML renders the page as if the comment does not exist. Use comments to explain the purpose of sections.
You use comments to describe parts of your code to leave notes for yourself. You can mark areas for edits and turn off part of your code temporarily.
Here is the comment tag:
<!-- comment text -->Use this format when writing your code. You must open the comment with <!-- and close it with -->.
Here’s the structure you need:
<!-- This is a single-line comment -->
<!--
This is a comment
on multiple lines
-->Use comments in the <head> section. Use comments in the <body> section. You can place them before major blocks. Place them near scripts or important elements.
Examples of Comments in HTML
Mark a Section for Future Update:
<!-- Update this hero section later -->
<section>
<h1>Welcome</h1>
</section>This comment explains that you will return to this section. It keeps track of unfinished work.
Turn Off an Element Without Deleting:
<!-- <button>Click me</button> -->This hides the button from the page. You do not lose the code. You can bring it back later.
Describe a Script Block:
<!-- Load the main JavaScript file for animations -->
<script src="main.js"></script>This shows why the script appears. You describe its role without running extra code.
Organize Sections:
<!-- Start of Contact Form -->
<form>
<input type="text" name="email" />
</form>
<!-- End of Contact Form -->This adds clear boundaries. You see where a section begins and ends. This helps with layout edits.
Browser Compatibility
All major browsers support comments. This includes:
- Chrome
- Firefox
- Safari
- Edge
- Opera
Here is what happens when you use comments in a web page:
- Browsers ignore all content inside
<!-- -->. - Comments do not render on the visible page.
- Browsers do not parse HTML elements inside comments.
- Comments do not affect page speed or layout directly.
Wrapping Up
In this article, you learned what comments in HTML do. You also saw where to place them and how to write them. Here is a quick recap:
- Comments do not appear in the browser.
- Use
<!--and-->to add a comment. - Place comments anywhere in the HTML document.
- Use comments to explain, disable, or organize code.
FAQs
How do I write a comment in HTML?
<!-- This is a comment -->Can I put comments inside <head> or <body>?
Does a comment affect the layout of the page?
Can I comment out HTML code to disable it?
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