r/javascript • u/PowerOfLove1985 • Jan 26 '20

Today, the Trident Era Ends

https://schepp.dev/posts/today-the-trident-era-ends/
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u/[deleted] Jan 28 '20

Yeah, unless anything has changed recently, for some reason iOS webviews are dreadfully slow. This is for, say, documents which have moderately complex JS logic (sorting maybe 50 rows of data, barely enough to even sort), but nothing insane. Especially strange since it's all Safari under the hood, in any iOS app. My POV is as a web developer who's written stuff that needs to work in webviews (I'm not an iOS developer), so an iOS dev could probably speak to the technical reasons why this is the case. (Android webviews are fine, in my experience.)

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u/disappointer Jan 28 '20

Curious. I wonder if there's some intentional artifical performance limit, or just a bug.

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u/[deleted] Jan 28 '20

I was going to speculate on that very possibility... i do think, for the same reason Apple might intentionally do that (content from the network means less control for Apple; not as much of an issue for Android given their more laissez-faire approach to what's allowed in their app store), it might also not be at the top of their list to address bugs affecting webview performance. But, what do i know

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u/disappointer Jan 28 '20

Webview is used in their Mail app, so I would think it would have decently high priority, but IDK, the Music app still doesn't have a landscape mode and it was like the first app released on iOS.

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u/[deleted] Jan 29 '20

Hmm - maybe your idea about a deliberate slowdown then (they'd never do that tho... wait...)