Are nested HTML comments possible?

html validation comments
QAZ picture QAZ · Jan 14, 2009 · Viewed 38.4k times · Source

as per the title; is it possible to have nested comments in valid HTML? see the example below...

<p>some text</p>

  <!-- comment 1

    <p>commented out html</p>

    <!-- comment 2

      // are nested html comment allowed?

    end of comment 2 -->

    <p>more commented out html</p>

  end of comment 1 -->

<p>some more text</p>

It appears not, does anybody know how I could get nested comments to work?

Answer

Aaron Digulla picture Aaron Digulla · Jan 14, 2009

When you nest a comment, replace "--" with "- -". When you un-nest, reverse the procedure. It's not the <!-- that is forbidden but the --.

Example:

<!-- some stuff
<!- - some inner stuff - ->
<!- - a sibling - ->
the footer -->

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