Receiving Promise <Pending> instead of value

问题

I have a a object that when I'm printing that it's returning Promise <Pending> (I've checked the type of getRateable and it is object)

getRateable = getRateableEntitiesTx(tx, hashtagList);

I can't have access to the value by this :

getRateableEntitiesTx(tx, hashtagList).then((res) => {return res})

If it's a Promise why it's not returning the res properly?

Thanks in advance for help

回答1:

You can't return the value from an async function because the function returns before the value has been received. That's why we have promises. You need to use the value from within the then() callback:

getRateableEntitiesTx(tx, hashtagList)
.then((rateable) => {
  // use rateable here
  console.log(rateable)
 })

来源：https://stackoverflow.com/questions/53697842/receiving-promise-pending-instead-of-value