在Objetive C中处理Javascript onclick函数

#import <WebKit/WebKit.h>

@interface ViewController : UIViewController <WKScriptMessageHandler>
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
    [configuration.userContentController addScriptMessageHandler:self name:@"buttonClicked"];
    
    WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:configuration];
    [self.view addSubview:webView];
    
    // Load your webpage here
}

#pragma mark - WKScriptMessageHandler

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
    if ([message.name isEqualToString:@"buttonClicked"]) {
        NSLog(@"Button was clicked!");
        // Handle the click event here
    }
}

@end

<button onclick="window.webkit.messageHandlers.buttonClicked.postMessage(null)">Click Me</button>

[webView evaluateJavaScript:@"document.getElementById('myButton').addEventListener('click', function() { window.webkit.messageHandlers.buttonClicked.postMessage(null); });" completionHandler:nil];