wkwebview执行js文件

import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let config = WKWebViewConfiguration()
        webView = WKWebView(frame: view.bounds, configuration: config)
        webView.navigationDelegate = self
        view.addSubview(webView)
        
        if let url = URL(string: "https://example.com") {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }

    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        // 执行 JavaScript 文件
        let jsScript = "alert('Hello, World!');"
        webView.evaluateJavaScript(jsScript, completionHandler: { (result, error) in
            if let error = error {
                print("Error executing JavaScript: \(error.localizedDescription)")
            } else {
                print("JavaScript executed successfully")
            }
        })
    }
}

import WebKit

class ViewController: UIViewController, WKScriptMessageHandler {
    var webView: WKWebView!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let config = WKWebViewConfiguration()
        let userContentController = WKUserContentController()
        userContentController.add(self, name: "nativeHandler")
        config.userContentController = userContentController
        
        webView = WKWebView(frame: view.bounds, configuration: config)
        view.addSubview(webView)
        
        if let url = URL(string: "https://example.com") {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }

    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        if message.name == "nativeHandler", let body = message.body as? String {
            print("Received message from JavaScript: \(body)")
        }
    }
}