HarmonyOS web原生和H5如何交互？

dsBridge.registerAsyn('showAlertAsync', function (a, b, c, callback) { 
  let counter = 0 
  let id = setInterval(() => { 
    if (counter < 5) { 
      callback(counter, false) 
      alert("原生调用JS showAlertAsync函数" + a + " " + b + " " + c + " " + counter) 
      counter++ 
    } else { 
      callback(counter, true) 
      alert("原生调用JS showAlertAsync函数" + a + " " + b + " " + c + " " + counter) 
      clearInterval(id) 
    } 
  }, 1000) 
 
})

Button("调用js函数-异步") 
  .margin({ top: 10 }) 
  .onClick(() => { 
    this.controller.callJs("showAlertAsync", [1, 2, '666'], (v: string) => { 
      this.message = v + "" 
    }) 
  })

function testClick() { 
  dsBridge.call('testClick', "hello", (responseData) => { 
    document.getElementById("show").innerHTML = "repsonseData from java, data = " + responseData 
  }) 
}

@JavaScriptInterface() 
testClick(p: string, handler: CompleteHandler) { 
  // p 为 h5 js 侧传递参数 
  this.cHandler = handler 
  this.cHandler.complete("it is ArkTS default response"); 
}