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Calling Objective-C Methods From JavaScript


The web scripting capabilities of WebKit permit you to access Objective-C properties and call Objective-C methods from the JavaScript scripting environment.

An important but not necessarily obvious fact about this bridge is that it does not allow any JavaScript script to access Objective-C. You cannot access Objective-C properties and methods from a web browser unless a custom plug-in has been installed. The bridge is intended for people using custom plug-ins and JavaScript environments enclosed within WebKit objects (for example, a WebView).

Bad news though: Not (yet) available in iOS, Mac OS only...

Apple Developer

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