如何從異步 function 獲取數據並將其用作另一個異步 function 上的 json 的屬性值？

Question

嗨，我是使用 nodejs 的新手，並且很長時間沒有使用 javascript 但是我很難從異步 function 獲取數據，因為當我嘗試將其用於另一個異步 ZC1C1145268E68A347 時我沒有得到任何數據，如果我不會在我的項目中造成如此多的混亂，我將如何做到這一點。 先感謝您。

路由器

 //this function is located inside a router and i want to use the output as a property value for a json.
 const createPaymentMethod = async () => {
        return paymongo.paymentMethods.create({
            data: {
              attributes: {
                type: 'card',
                details: {
                  card_number: card,
                  exp_month: mo,
                  exp_year: yr,
                  cvc: cvc,
                }
              }
            }
          },
          
          )
        .then(paymentMethods => {
            return paymentMethods.data.id;
        })
        .catch(err => {
            return err;
        });
    }
    
    const getPaymentMethodId = async () => {
        var id = await createPaymentMethod();
        console.log(id);
    }

//Attaching Payment Method to Intent
    const attachPaymentIntent = async () => {
        return paymongo.paymentIntents.attach(getPaymentIntentId(),{
            data: {
              attributes: {
                payment_method: getPaymentMethodId()
              }
            }
          })
        .then(attachPaymentIntent => {
            return attachPaymentIntent;
        })
        .catch(err => {
            return err;
        });
    }
    
    const getAttachedPaymentIntent = async () => {
        var id = await attachPaymentIntent();
        console.log(id);
    }
    
    getAttachedPaymentIntent();

//but after all this trouble the API still saying that the 'payment_method:' inside the attachPaymentIntent is still empty. 

Answer 1

由於您的getPaymentMethodId()是異步 function。 您必須使用 await 運算符來等待它的 promise。

const payment_method = await getPaymentMethodId();
payment_method: payment_method;