iOS 15 WKWebview evaluateJavaScript API does not work for accessing "window.subObj"

Question

Created Aug ’21

Replies 4

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We call webView evaluateJavaScript:javaScript completionHandler:^(id _Nullable result, NSError *_Nullable error) API to inject a javascript to WKWebView.

The javascript contains "window.xxx"definition.

Since iOS 15, "window.xxx" can not be found and it will return "undefined" when accessing "window.xxx" . It seems that javascript "window" object can not have any custom sub-object.

However same javascript code works fine on iOS 14.x and below.

Any ideas? Thanks!

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Answer 1

pernicCO OP

Aug ’21

We have the same issue. We migrate all our scripts on WKUserScript and it’s working fine.

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Answer 2

pernicCO OP

Sep ’21

webView evaluateJavaScript:javaScript completionHandler:^(id _Nullable result, NSError *_Nullable error) worked fine in the last iOS Beta 15

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Answer 3

Felix.zhang OP

Sep ’21

Thanks for the information, I'm now upgrading my device to iOS 15 beta 8.

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Answer 4

caoweiju OP

Sep ’21

we get it as a bug in beta version, and try to avoid it, however, the release version 15.1 fixed it，crying&Tearful

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