iOS开发WKWebView 返回H5上级页面

#pragma mark   ----  点击事件

-(void)leftTapClick:(UITapGestureRecognizer *)sender{

    //判断是否能返回到H5上级页面
    if (self.myWeb.canGoBack==YES) {
        //返回上级页面
        [self.myWeb goBack];

    }else{
        //退出控制器
//        [self dismissViewControllerAnimated:YES completion:nil];
        [self.navigationController popViewControllerAnimated:YES];
    }

}