我需要帮助来运行在一个简单的webview应用程序在Xcode中创建的Javascript警报和确认

import UIKit
import WebKit

class ViewController: UIViewController, WKUIDelegate {
    
    var webView: WKWebView!
    
    override func loadView() {
        let webConfiguration = WKWebViewConfiguration()
        webView = WKWebView(frame: .zero, configuration: webConfiguration)
        webView.uiDelegate = self
        view = webView
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let myURL = URL(string: "https://your-website.com")
        let myRequest = URLRequest(url: myURL!)
        webView.load(myRequest)
    }
}

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

function showAlert() {
    alert("This is an alert!");
}

function showConfirmation() {
    var result = confirm("Do you want to proceed?");
    if (result) {
        alert("You clicked OK!");
    } else {
        alert("You clicked Cancel!");
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    
    let myURL = URL(string: "https://your-website.com")
    let myRequest = URLRequest(url: myURL!)
    webView.load(myRequest)
    
    webView.evaluateJavaScript("showAlert()", completionHandler: nil)
    webView.evaluateJavaScript("showConfirmation()", completionHandler: nil)
}