How to run JavaScript on a UIWebView with stringByEvaluatingJavaScript(from:)
Swift version: 5.1
If you’re still using the deprecated UIWebView, you can run custom JavaScript on it using the method stringByEvaluatingJavaScript(from:). The method returns an optional string, which means if the code returns a value you'll get it back otherwise you'll get back nil.
Here's an example that pulls out the current page's title:
let pageTitle = yourUIWebView.stringByEvaluatingJavaScript(from: "document.title")Note: if you're using a WKWebView you can use its title property directly to get the same thing.
LEARN SWIFTUI FOR FREE I have a massive, free SwiftUI video collection on YouTube teaching you how to build complete apps with SwiftUI – check it out!
Available from iOS 2.0
Similar solutions…
- How to run code when your app is terminated
- How to run JavaScript on a WKWebView with evaluateJavaScript()
- How to run an external program using Process
- 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.
