How to run JavaScript on a WKWebView with evaluateJavaScript()
Using evaluateJavaScript() you can run any JavaScript in a WKWebView and read the result in Swift. This can be any JavaScript you want, which effectively means you can dig right into a page and pull out any kind of information you want.
Here's an example to get you started:
webView.evaluateJavaScript("document.getElementById('someElement').innerText") { (result, error) in
if error != nil {
print(result)
}
}Available from iOS 8.0 – see Hacking with Swift tutorial 4
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