Any page that has a JavaScript function named "top()" in it causes JavaScript to fail.
The function doesn't need to be called or even contain anything.
eg.
function top()
{
}
JavaScript just locks up.
This affects iOS17.2 and macOS 14.2
If occurs in Safari and any app using WKWebView
This is a critical bug that affects sites and apps in the wild. I suggest there is something very wrong with the Javascript engine in general if certain function names can cause such a failure.
Does anyone else have other function names that cause this failure?
RichardNorthcott
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
User for
Post
Replies
Boosts
Views
Activity
My code used to work on iOS versions prior to iOS16, but it no longer does.
I am running iPadOS -not checked on iPhones.
A view based on WKWebView is supposed to show HTML files inside a keyboard extension. It is now not not displaying correctly and any Javascript will lock up the UI. Setting stringByEvaluatingJavaScriptFromString > evaluateJavaScript's completionHandler to nil fixes this, but Javascript is not run.
No errors, but blank space.
Any ideas?