CODEWITHSUNDEEP
javascriptnode.jspromisebluebird
Martin Golpashin
Martin Golpashin

Reputation: 1062

Promise fulfill after each loop complete

promise.each(function(obj){
    obj.doIntensiveWork()
    .then(function(){
        console.log("I AM FIRST")
    })
})
.then(function(){
    console.log("I AM SECOND")
})

let's say doIntensiveWork() takes quite some time to fulfill. "I AM SECOND" would be logged before "I AM FIRST", since each is resolved as doIntensiveWork() is called (but not fulfilled) on every obj. Is that correct?

If yes, how can I invert this to make sure "I AM SECOND" gets logged only once and after the last "I AM FIRST" log? I am using the Bluebird API

Upvotes: 1

Views: 187

Answers (1)

Jerome WAGNER
Jerome WAGNER

Reputation: 22442

You are correct in that each does not wait for the intensiveWork to be finished. You can 'join' all the intensive work by using the map function (do not forget the return)

promise.map(function(obj){
    return obj.doIntensiveWork()
    .then(function(){
        console.log("I AM FIRST")
    })
})
.then(function(){
    console.log("I AM SECOND")
})

Upvotes: 3

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