- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];

[alertController addAction:([UIAlertAction actionWithTitle:@"確認(rèn)" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

completionHandler();

}])];

[self presentViewController:alertController animated:YES completion:nil];

}

- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];

[alertController addAction:([UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {

completionHandler(NO);

}])];

[alertController addAction:([UIAlertAction actionWithTitle:@"確認(rèn)" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

completionHandler(YES);

}])];

[self presentViewController:alertController animated:YES completion:nil];

}

- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * _Nullable))completionHandler{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:prompt message:@"" preferredStyle:UIAlertControllerStyleAlert];

[alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {

textField.text = defaultText;

}];

[alertController addAction:([UIAlertAction actionWithTitle:@"完成" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

completionHandler(alertController.textFields[0].text?:@"");

}])];

[self presentViewController:alertController animated:YES completion:nil];

}

添加以上三個(gè)方法