WKWebview嵌入H5 Windows.open 无法拦截问题

public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
	        decisionHandler(.allow)
}

 public func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
        
        if navigationAction.targetFrame?.isMainFrame == nil {
            webView.load(navigationAction.request)
        }
        return nil
}