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HTML Comments — exercises and bug fixes

5 hands-on exercises and 5 find-the-bug challenges for the HTML Comments lesson. Every one is checked automatically in the browser — write the code, run it, and the tests tell you what still fails.

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Exercises(5)

  1. 1

    Add a comment above a heading

    easy10 min

    Add an HTML comment, then an h1 saying "Docs".

  2. 2

    Comment out an element

    easy10 min

    Keep only the paragraph visible; comment out the old heading.

  3. 3

    Label a section with a comment

    easy10 min

    Add a comment and a section containing a heading.

  4. 4

    Comment between two blocks

    easy10 min

    Add two paragraphs with a comment between them.

  5. 5

    Document an attribute choice

    medium10 min

    Add a comment explaining a link that opens in a new tab.

Find the bug(5)

  1. 1

    Fix the heading left inside a comment

    easy8 min

    The page title is commented out, so no heading renders.

  2. 2

    Fix the legacy conditional comment

    easy8 min

    The content sits inside a conditional comment, so modern browsers never render it.

  3. 3

    Fix the commented-out content

    easy8 min

    The paragraph that should show was commented out.

  4. 4

    Fix the TODO left in place of the heading

    easy8 min

    A comment stands where the real heading should be.

  5. 5

    Fix the paragraph commented out with the note

    easy8 min

    The note and the paragraph were commented out together.

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