Question

您好如何读取从提取呼叫返回的数据：

export function* fetchMessages(channel) {     
    yield put(requestMessages())
    const channel_name = channel.payload
    try {      
        const response = yield call(fetch,'/api/messages/'+channel_name)

        const res = response.json()
            console.log(res)
        yield put(receiveMessages(res,channel))


   } catch (error){      
       yield put(rejectMessages(error))
   }      
}

当我在console.log（res）时，我得到：

Promise {[[PromiseStatus]]: "pending", [[PromiseValue]]: undefined}
__proto__
:
Promise
[[PromiseStatus]]
:
"resolved"
[[PromiseValue]]
:
Array[7]

如何获取我的＆＃34;信息＆＃34; （这个承诺的侧面阵列[7]？我对这一切都不熟悉。谢谢

Answer 1

response.json（）是异步并返回承诺

更改此

const res = response.json()

到

const res = yield response.json()

webpackbin示例

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1 个答案: