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
Did this solution work for you? Please pass it on!
Other people are reading…
- How to control the user interface of a WKWebView using WKUIDelegate
- How to load HTTP content in WKWebView and UIWebView
- How to enable back and forward swiping gestures in WKWebView
- What's the difference between UIWebView and WKWebView?
- How to control the sites a WKWebView can visit using WKNavigationDelegate
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Go from iOS to macOS the easy way!
If you like Hacking with Swift, you'll love Hacking with macOS – learn to build macOS apps today, using 18 real-world projects!
