web写入customUseragent最佳实践

import webview from '@ohos.web.webview'; 
 
@Entry 
@Component 
struct Index { 
  webviewController = new webview.WebviewController(); 
 
 
  build() { 
    Row() { 
      Column() { 
        Web({ src: '指定网页', controller: this.webviewController }) 
          .onControllerAttached(() => { 
            try { 
              let defaultUA: string = this.webviewController.getUserAgent(); 
              console.info(Invoke webviewController.getUserAgent/setCustomUserAgent succeed! customUA: ${defaultUA}); 
              this.webviewController.setCustomUserAgent(${defaultUA}customUA); 
              const curUA: string = this.webviewController.getCustomUserAgent(); 
              console.info(Invoke webviewController.getUserAgent/setCustomUserAgent succeed! err: ${curUA}); 
            } catch (err) { 
              console.error(Invoke webviewController.getUserAgent/setCustomUserAgent failed! err: ${JSON.stringify(err)}); 
            } 
          }) 
 
 
      } 
      .width('100%') 
    } 
    .height('100%') 
 
  } 
}