WKWebView Swift - Get Console.log for javascript

I have WKWebView setup, which loadHTMLString(Need to load multiple html files which include JS). I am not able to get the console.log error messages that the JS code produce. I want to get this log within the app. Cannot change settings in safari.


I have tried JSContext(Javascript core) and WKWebView delegate methods, but couldn't find a solution.

I need all the console log messages that is loaded in WKWebView.


Swift version - 4.2 or 5.0


Thank You.

Barath Mohan

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I’ve not done this myself but I believe that you can do this by using a user script (

WKUserScript
) that overrides 
console.log
with your own function that routes the the text to your app via a script message ( 
WKScriptMessage
). I’m not aware of any Apple resources that show this in detail, but you can find a number of third-party resources by searching the ’net for “wkwebview capture console log”.

Also, if you’d like Apple to add an dedicated API for this, I encourage you to file an enhancement request describing your requirements. Please post your bug number, just for the record.

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Apple Developer Relations, Developer Technical Support, Core OS/Hardware 

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eskimo
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