HTML comments delete page code when saving

[Andreas_Hopf]

When wrapping HTML page code in comment tags

<!--

Some lines of HTML page code here

-->

and saving, the commented-out code disappears for good.

This is bad, what can one do?

[ElijahDow · Accepted solution]

Looks like that's just code that Canvas won't allow unfortunately. Here's another post someone had on this topic.

If you're using comments to hide things on a page, a workaround could be adding a div around the things you're wanting hidden with a display: none attribute.

EX)

<div style="display: none;">
content you'd like hidden
</div>

[ElijahDow · Accepted solution]

Looks like that's just code that Canvas won't allow unfortunately. Here's another post someone had on this topic.

If you're using comments to hide things on a page, a workaround could be adding a div around the things you're wanting hidden with a display: none attribute.

EX)

<div style="display: none;">
content you'd like hidden
</div>

[Andreas_Hopf]

Ok, thanks. Wish I had known this before.

[Jeff_F · Accepted solution]

Hello @Andreas_Hopf  - I like Elijah's suggestion but also wish to share the Canvas HTML Editor Allowlist.

https://community.canvaslms.com/t5/Canvas-Resource-Documents/Canvas-HTML-Editor-Allowlist/ta-p/38706... 

[Jess_M]

It is absolutely absurd to me that Canvas has stripped this functionality. Comments tags are incredibly useful, a hidden attribute doesn't change the syntax display in the same way comment tags do, making it much more difficult to navigate longer code.