jsBridge中如何正确使用this

import web_webview from '@ohos.web.webview'; 
  
class testclass { 
text:string 
constructor() { 
this.text = '测试文本' 
} 
test = (): string => { 
return this.text; 
} 
} 
  
@Entry 
@Component 
struct WebComponent { 
webviewController: web_webview.WebviewController = new web_webview.WebviewController(); 
// 声明需要注册的对象 
@State testObj: testClass = new testClass(); 
  
build() { 
Column() { 
// web组件加载本地index.html页面 
Web({ src: $rawfile('index.html'), controller: this.webviewController}) 
.javaScriptAccess(true) 
// 将对象注入到web端 
.javaScriptProxy({ 
object: this.testObj, 
name: "testObjName", 
methodList: ["test"], 
controller: this.webviewController 
}) 
} 
} 
}