HTML & CSS Course
HTML & CSS
/
Beginner

HTML Comments

Definition

A piece of text in an HTML document that is completely ignored by the web browser when rendering the page.

Explain Like I'm New

Comments are sticky notes left by developers for other developers. They are invisible to regular users looking at the webpage. You use them to explain complex code, or to temporarily 'hide' a piece of code you don't want to delete just yet.

Real World Example

Commenting out a holiday banner. `<!-- <div class="banner">Merry Christmas!</div> -->`. The code stays in the file for next year, but the browser doesn't show it on the screen.

Common Use Cases

  • •Documenting code structure
  • •Debugging by temporarily hiding elements

Interactive Example

Interview Questions

basic

  • What is the syntax for an HTML comment?

intermediate

  • Can regular users see your HTML comments?

Flash Cards

Question

What is the syntax?

Click to reveal answer
Answer

`<!-- Your comment goes here -->`

Question

Can users see them?

Click to reveal answer
Answer

They cannot see them on the actual webpage. However, if a user right-clicks and selects 'View Page Source', they CAN see your comments. Never put passwords or API keys in HTML comments!