javascript - How can I make the console.log at the bottom wait until its all complete, then show me the answer instead of waitin

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This is the code I have, I know there has been people to explaining the await functions here but I can not seem to understand why mine is not working, inside the function it console.logs the database perfectly, also on the .then section of code, but when it es to the console.log outside it won't work.

function resolveAfter1() {
  return new Promise((resolve, reject) => {
    var scoresFromDb = db.account.find({}, { username: 1, score: 1 }).toArray(function(err, result) {
          if (err) 
              reject(err);
          else
              resolve(result);
              // console.log(result);
    });
  });
}

resolveAfter1() // resolve function
    .then((result)=>{console.log(result);})
    .catch((error)=>{console.log(error);})

It won't show on the console.log(result) under either.

 async function asyncCall() {
      var result = await resolveAfter1();
      return result
      // console.log(result);
    }

To display it under this line, what Im I doing wrong?

console.log(asyncCall(), ' why is it still pending?');

result on the console.log

Promise { <pending> } ' why is it still pending?'

This is the code I have, I know there has been people to explaining the await functions here but I can not seem to understand why mine is not working, inside the function it console.logs the database perfectly, also on the .then section of code, but when it es to the console.log outside it won't work.

function resolveAfter1() {
  return new Promise((resolve, reject) => {
    var scoresFromDb = db.account.find({}, { username: 1, score: 1 }).toArray(function(err, result) {
          if (err) 
              reject(err);
          else
              resolve(result);
              // console.log(result);
    });
  });
}

resolveAfter1() // resolve function
    .then((result)=>{console.log(result);})
    .catch((error)=>{console.log(error);})

It won't show on the console.log(result) under either.

 async function asyncCall() {
      var result = await resolveAfter1();
      return result
      // console.log(result);
    }

To display it under this line, what Im I doing wrong?

console.log(asyncCall(), ' why is it still pending?');

result on the console.log

Promise { <pending> } ' why is it still pending?'

• javascript
• node.js
• asynchronous
• async-await

Share Improve this question Follow asked Feb 12, 2018 at 10:39 AndrewAndrew 70522 gold badges99 silver badges2626 bronze badges 3

• 2 await returns a promise, it does not wait for a value to return. You should still call .then() or make the call await in the console.log function when asking for the value. – Randy Commented Feb 12, 2018 at 10:43
• Problem is that Im then wanting to send these values over to the client side of my game, socket.emit('allScores', asyncCall()); – Andrew Commented Feb 12, 2018 at 10:46
• 2 @Andrew Well, you can't. An async call always returns a promise, there's no way to trick time. await does not cause the function to synchronously return a future value. You have to use asyncCall().then(e => socket.emit('allScores', e)) or socket.emit('allScores', await asyncCall()). – Bergi Commented Feb 12, 2018 at 10:54

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3 Answers 3

Sorted by: Reset to default 2

asyncCall is an async function, you have to await for it to resolve.

console.log(await asyncCall())

because console.log doesnt wait for the async call to finish. It already evaluates what the value of the asyncCall which therefore is a Pending Promise.

If you want to emit something because of the asyncCall then emit the value inside the asyncCall

asyncCall.then((res) => socket.emit('topic', res))

The answer to this was -

asyncCall().then((res) => socket.emit('topic', res))

Thanks for those who helped!

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