How to call Objective-C from Javascript?

Question

I have a WebView, and I want to call a view in Objective-C from JavaScript. Does someone know how I can do this?

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I have this code in my ViewController:

Answer 1

Check this one - understanding XMLHttpRequest responses using this (or other javascript) functions?, it's using objective C to call ajax js function, and get the response after it's done, you know the trick is that webview will be triggered when you change the location in javascript, so you can check the location to know its your javascript call or the real request.