问:

const getData = async () =>{

console.log('触发了getData接口')

let resultData = await getActivityInfo(activityId);

console.log(resultData,'resultData')

let id = resultData.id;

let shareImg = resultData.shareImg

let shareSubtitle = resultData.shareSubtitle

let shareTitle = resultData.shareTitle

console.log(id,shareImg,shareSubtitle,shareTitle,'-')

return {id,shareImg,shareSubtitle,shareTitle}

}

const {id,shareImg,shareSubtitle,shareTitle} = getData() console.log(id,shareImg,shareSubtitle,shareTitle,'?')

这段代码哪里有问题?为什么外面的输出没结果?

回答:

需要加上await getData()才能获取到数据,因为需要使用await等待异步请求返回数据然后再赋值,要是不使用await,就没有等待异步请求返回数据,所以就是undefined.