Swift 使用WKWebView 实现Swift 与JS 交互

功能一：删除京东手机版https://m.jd.com/右上角的登陆按钮 代码如下

import UIKit
import WebKit
class ViewController2: UIViewController,WKNavigationDelegate {
    @IBOutlet weak var weView: WKWebView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
      
        let webUrl = "https://m.jd.com/"
        let request = URLRequest.init(url: URL.init(string: webUrl)!)
        self.weView.navigationDelegate = self
        self.weView.load(request)
    }
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
       webView.evaluateJavaScript("document.getElementById('msShortcutLogin').children[0].remove();") { (nil
            , error) in
        }
    }
    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        print("error%@",error)
    }
}

二，修改“京东超市”对应的图片

js 代码如下：

//代理方法替换如下：
 func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
   
        webView.evaluateJavaScript("document.getElementsByClassName('box_list position-ab')[0].children[0].children[0].src = '//m.360buyimg.com/mobilecms/s120x120_jfs/t1/8420/25/9039/4154/5c120d5bE781c8f4d/6375980b13835c7c.png.webp';") { (nil
            , error) in
        }
    }

修改“京东生鲜”的标题为“生鲜京东”

js 代码如下：

//代理方法替换如下
 func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
      
        webView.evaluateJavaScript("document.getElementsByClassName('box_list position-ab')[0].children[3].children[1].innerText='生鲜京东'；") { (nil
            , error) in
        }
    }