Return JavaScript value in Swift

Question

I need to return a value in Swift by executing JavaScript, but I am having trouble I have searched everywhere, but I can't find anything that works. To execute the JavaScript, I am using

webby.evaluateJavaScript("document.querySelector(\"pre\").innerText;")

(Webby is the name of the web view) The JavaScript returns a string, which I would like to access in Swift. How would I accomplish this? Thanks.

Answer 1

To access the value you have to provide a completion handler to evaluateJavaScript, see the docs:

webby.evaluateJavaScript("<your code goes here>") { result, error in
  if let result = result {
    // your result handling goes here
  }
}