Question

35

Resolve Javascript Promise outside the Promise constructor scope

rated 0 times [ 38] [ 3] / answers: 1 / hits: 158936 / 10 Years ago, wed, october 1, 2014, 12:00:00

I have been using ES6 Promise.

Ordinarily, a Promise is constructed and used like this

new Promise(function(resolve, reject){

    if (someCondition){

        resolve();

    } else {

        reject();

    } 

});

But I have been doing something like below to take the resolve outside for the sake of flexibility.

var outsideResolve;

var outsideReject;

new Promise(function(resolve, reject) { 

    outsideResolve = resolve; 

    outsideReject = reject; 

});

And later

onClick = function(){

    outsideResolve();

}

This works fine, but is there an easier way to do this? If not, is this a good practice?

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karivictoriab

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answered 10 Years ago ulysses · Accepted Answer

simple:

var promiseResolve, promiseReject;



var promise = new Promise(function(resolve, reject){

  promiseResolve = resolve;

  promiseReject = reject;

});



promiseResolve();