     func close() {
         self.navigationController?.dismiss(animated: true, completion: nil)
     }
+    
 
 
 }

        webView.uiDelegate = self
        self.view.addSubview(webView)
        
        let paste = UIPasteboard.general
        
        let urlString = paste.string ?? "https://www.baidu.com"
        let request = NSURLRequest(url: URL(string: urlString)!)
        
        webView.load(request as URLRequest)

        
        if gesture.state == UIGestureRecognizerState.began {
            let point = gesture.location(in: webView.scrollView)
            //第一种方式
            let getPointedElement = "document.elementFromPoint(\(point.x),\(point.y)).src"
//            let getPointedElement = "document.body"
            webView.evaluateJavaScript(getPointedElement, completionHandler: { (obj, error) in
                let alert = UIAlertController(title: "", message: "", preferredStyle: .alert)
                alert.addAction(UIAlertAction(title: "确定", style: .default, handler: nil))
                if obj != nil {
                    
                    alert.title = "获取到了"
                    alert.message = obj as? String
                    
                    let paste = UIPasteboard.general
                    paste.string = alert.message
                    
                    
                    
                }else
                {
                    alert.title = "未获取到！"
                }
                self.present(alert, animated: true, completion: nil)
            })
            
            //第二种方式：通过注入 js ，从 js 的方法中回调给 VC 需要的内容
        }
        
    }
