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...
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...
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