Show HN: I made CSS-only glitch effect (muffinman.io)

justsomehnguy 5 days ago

Doesn't work on Android DDG and FF on th site, but works in both on CodePen.

stankot 5 days ago

That is weird, because it is HTML/CSS only. Do you see anything that would help me debug it? Could it be that an add-on (content blocker) messes up with it? I don't have an android device to test. I don't see any issues on desktop and ios though.

justsomehnguy 5 days ago

Quite amusingly:

site glitch doesn't work on the desktop FF too, not in any of three, with various staleness but nothing too old

works on the CodePen, but if I replace CSS there with the response of glitch.css from the Network tab - it blanks and never shows anything

no ad-blockers, no errors while loading

stankot 5 days ago

Thanks for checking, I’ll try to see what is going on.

justsomehnguy 3 days ago

Shoulda checked it in the first place:

    GET https://muffinman.io/js/posts/glitch/parser.js [HTTP/1.1 200 OK 138ms]

    Uncaught TypeError: animation is undefined
        parse https://muffinman.io/js/posts/glitch/parser.js:263
        Monorail https://muffinman.io/js/posts/glitch/monorail.js:327
        <anonymous> https://muffinman.io/js/posts/glitch/index.js:10
        <anonymous> https://muffinman.io/js/posts/glitch/index.js:5
FF 138.0.1 (May 1, 2025)
stankot 3 days ago

I've figured it out. The error means that this call fails:

    const animation = animationElement.getAnimations()[0];
As Firefox supports `getAnimations` since 2020, I figured something else is messing up with it. I've tried to enable "reduced motion" in the system settings and it broke the animation!

It is because I had force-disabled all animations on the site when this option is enabled.

I patched it, it should work now. Thank you for your help!

EDIT: typo

EDIT2: I also added simple error handling to display a message if parsing the animation fails.

justsomehnguy 3 days ago

Yep, works on DDG/A, FF/Win64 now!

Semaphor 5 days ago

Works for me on the site, FF Android

dahrkael 3 days ago

works for me in android DDG

lunaps 3 days ago

That's truly impressive, never have seen sth like that before with CSS

dlouxgit 4 days ago

This CSS glitch effect is so dope! Makes me wanna try it on my own website.

stankot 4 days ago

Go for it, and share a link!

mdrzn 3 days ago

Very interesting and beautiful effect!

perilunar 4 days ago

Nice!

nmoya 5 days ago

super cool!