How to run JavaScript on a WKWebView with evaluateJavaScript()
Swift version: 5.2
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)
}
}
SPONSORED Would you describe yourself as knowledgeable, but struggling when you have to come up with your own code? Fernando Olivares has a new book containing iOS rules you can immediately apply to your coding habits to see dramatic improvements, while also teaching applied programming fundamentals seen in refactored code from published apps.
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 8.0 – see Hacking with Swift tutorial 4
Similar solutions…
- How to run code when your app is terminated
- How to run an external program using Process
- How to run JavaScript on a UIWebView with stringByEvaluatingJavaScript(from:)
- How to do conditional test tear down using addTeardownBlock()
- How to use Instruments to profile your SwiftUI code and identify slow layouts
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
