WKWebview stringByEvaluatingJavaScriptFromString equivalent?

Question

UIWebview has (had?) an extremely useful function that enabled access to javascript variables from Swift.

func stringByEvaluatingJavaScriptFromString(_ script: String) -> String?

Does WKWebview have an equivalent function or idiom enabling access to javascript variables from Swift?

Answer 1

Yes, WKWebView has the evaluateJavaScript method that lets you run JavaScript code and access JavaScript variables.

func evaluateJavaScript(_ javaScriptString: String, 
  completionHandler: ((Any?, Error?) -> Void)? = nil)