1 -(void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation{ 2     //获取 当前页URL 3     NSString *js = @"document.location.href"; 4     [self.webView evaluateJavaScript:js completionHandler:^(id _Nullable response, NSError * _Nullable error) { 5         NSLog(@"response: %@", response); 6     }]; 7      8 } 9 10 //这个调用只能放在 finish 里，不然会报JS 异常11 - (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{12     NSString *js = @"headHide()";13     [self.webView evaluateJavaScript:js completionHandler:^(id _Nullable response, NSError * _Nullable error) {14         NSLog(@"\n error: %@", error);15     }];16 17 }