WkWebKit - javascript on loaded page finds window.webkit is undefined

Question

I\'m experimenting with WkWebKit talking back and forth between app and page. I can get javaScript to execute fine using WkWebView evaluateJavascript method, but when I try

Answer 1

I solved it and problem was that if you set userContentController to a new object, that userContentController's WKScriptMessageHandlers will not be registered correctly in Apple's internal code:

WKUserContentController *userContentController = [WKUserContentController new];
userContentController.addScriptMessageHandler(self, name: "jockey")
userContentController.addScriptMessageHandler(self, name: "observe")
webView.configuration.userContentController = userContentController

fixed by using the already instantiated userContentController by Apple:

webView.configuration.userContentController.addScriptMessageHandler(self, name: "jockey")
webView.configuration.userContentController.addScriptMessageHandler(self, name: "observe")