ErrorManager捕获js异常

let registerId = -1; 
let callback: errorManager.ErrorObserver = { 
  onUnhandledException: (errMsg) => { 
    console.log("应用产生未捕获的异常时的回调,onUnhandledException----------------------- " + errMsg); 
    console.log(errMsg); 
  }, 
  onException: (errorObj) => { 
    console.log("当应用产生异常上报js层时的回调onException------------------------------") 
    console.log('onException, name: ', errorObj.name); 
    console.log('onException, message: ', errorObj.message); 
    if (typeof(errorObj.stack) === 'string') { 
      console.log('onException, stack: ', errorObj.stack); 
    } 
  } 
} 
let abilityWant: Want; 
onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void { 
  
    //注册错误监听接口，当系统监测到应用异常时会回调该监听。 
    // 该接口为同步接口，返回值为注册的监听对象对应的序号 
    registerId = errorManager.on("error", callback); 
    abilityWant = want; 
  } 
  
  onDestroy(): void { 
    //以callback的形式解除注册监听，传入的number为之前注册监听时返回的序号。 
    errorManager.off("error", registerId, (result) => { 
      console.log("result " + result.code + ";" + result.message) 
    }); 
  }

@Entry 
@Component 
struct CrashPage { 
  @State message: string = 'Hello World' 
  build() { 
    Row() { 
      Column() { 
        Button('捕获异常') 
          .onClick(() => { 
            let tempList = ['0', '1'] 
            tempList[5].toString() 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}