Slow javascript

[urticadioica]

Since at least several months ago, some piece of javascript on vimgolf.com has been running slow on large challenge pages. I think I've found the problem: a call to .button() in application.js. Removing it on a local copy removes the issue.

This link suggests that initializing a button in jQuery involves an expensive DOM search every time it's triggered, so it causes problems on large pages.

Severity: On the largest pages, this problem causes up to a 30 second delay after $(document).ready triggers, after which I can't scroll. (That's on my modern-but-bargain-cheap laptop, running Firefox.) I get up to 3 "Stop script" dialogs during that time. For users who can't see all the solutions yet, it won't be quite so bad, but after they climb the leaderboard...

[Hettomei]

We can see it in chrome devtool ! so much time/cpu spent to have a "good looking" button :)

I let a comment here to remember to delete "application.js" that do nothing than adding some css on 2 buttons.

My smartphone crashed because of this. So I think it is a step to "make it more mobile friendly"

[igrigorik]

I'm all for removing those libraries in favor of vanilla CSS and JS markup. :)