如何在iOS上用XPath访问矢量图形部件

import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    
    var webView: WKWebView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        webView = WKWebView(frame: view.bounds)
        webView.navigationDelegate = self
        view.addSubview(webView)
        
        if let url = URL(string: "https://example.com") {
            webView.load(URLRequest(url: url))
        }
    }
    
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        webView.evaluateJavaScript("document.evaluate(\"//*[@class='your-class-name']\", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null).snapshotItem(0).innerText") { (result, error) in
            if let error = error {
                print("XPath evaluation error: \(error.localizedDescription)")
            }
            
            if let elementText = result as? String {
                print("Text of the element: \(elementText)")
            }
        }
    }
}