Detect if page is loaded inside WKWebView in JavaScript

Question

How can I reliably detect using javascript that a page is loaded inside a WKWebView? I\'d like to be able to detect these scenarios:

• iOS & WKWebView
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Answer 1

It seems that because of the latest iOS Chrome using WKWebView as rendering engine, Chrome is detected as WKWebView. ua.indexOf('CriOS') !== -1 will helps to distinguish Chrome from WKWebView in App.