iOS開發WKWebView 返回H5上級頁面

#pragma mark   ----  點擊事件

-(void)leftTapClick:(UITapGestureRecognizer *)sender{
    
    //判斷是否能返回到H5上級頁面
    if (self.myWeb.canGoBack==YES) {
        //返回上級頁面
        [self.myWeb goBack];
        
    }else{
        //退出控制器
//        [self dismissViewControllerAnimated:YES completion:nil];
        [self.navigationController popViewControllerAnimated:YES];
    }
    
    
}