SwiftUI 中Webview与JS交互

iOS中WKWebview原生与网页端JS交互常用的方法是

首先在web view中注入标定好的方法名，例如标定一个request方法

let config = WKWebViewConfiguration()

let userContent = WKUserContentController();

   var dealMessage = DealMessage()

userContent.add(dealMessage, name: "request");

config.userContentController = userContent;

DealMessage类实现代理回掉方法

class DealMessage:NSObject,WKScriptMessageHandler{
    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        print("接收到消息：\(message.body)")
        guard let web = message.webView else {
            return
        }
        if message.name == "request" {
            print("接收到消息request：\(message.body)")
        }else if message.name ==  "gotoshop" {
            web.evaluateJavaScript("gotoshopDetail()")
        }
    }
}

web端 JS调用swif

//js与原生交互
  const para = {
    params: {
      innerHeight: window.innerHeight,
      screnHeight: window.screen.height,
      safeAreaHeightValue: safeAreaHeightValue,
      top: topSafeAreaHeight,
      bottom: bottomSafeAreaHeight,
    },
  }
  const body = JSON.stringify(para)
  window.webkit.messageHandlers.request.postMessage(body)

Swift调JS就简单了

 web.evaluateJavaScript("gotoshopDetail()")

 web端提供IOS调用的方法

window.gotoshopDetail = () => {
  router.push({
    name: 'shop',
    params: {
      id: props.data.id,
    },
  })
}