I was writing code that does something that looks like:  function getStuffDone(param) {           | function getStuffDone(param) {     var d = Q.defer(); /* or $q.defer */ |     return new Promise(function(resolve, reject) {     // or = new $.Defer...

I've been developing JavaScript for a few years and I don't understand the fuss about promises at all.  It seems like all I do is change:  api(function(result){     api2(function(result2){         api3(function(result3){              // do...

Consider the following code that reads an array of files in a serial/sequential manner. readFiles returns a promise, which is resolved only once all files have been read in sequence.  var readFile = function(file) {   ... // Returns a promise. };...

I making multiple mongoDB queries in loop. and want to send the all results as one data array.But when I simple use the return for send the data it simply return undefined  and do not wait for results of all DB request. I also tried to use q.moulde...

I am having a hard time running promises sequentially.  var getDelayedString = function(string) {     var deferred = Q.defer();      setTimeout(function() {         document.write(string+" ");         deferred.resolve();     }, 500);      r...

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In my code, based on a specific condition, I would like to skip to the done function, irrespective of all the then functions.  The original version of this question is in the edits. The following is the actual problem I am dealing with. Sorry for t...

I have a component which gets a collection of items as props and maps them to a collection of components which are rendered as children of a parent component. We use images stored in WebSQL as byte arrays. Within the map function I get an image Id...

I have a simple node module which connects to a database and has several functions to receive data, for example this function:    dbConnection.js:  import mysql from 'mysql';  const connection = mysql.createConnection({   host: 'localhost...

I'm using Q for promises, but when setting up some tests I discover I see way in catching async errors thrown inside a function that returns a promise.   I tried to wrap it inside a Q.when and chained a fail and or as below a Q.fcall and a chaine...