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I am trying to use promise to send an ajax request to a php script which checks if a file exist on … Read more Promise Returning Undefined

This question might be a little vague, but I'll try my best to explain. I'm trying to creat… Read more How To Sequentially Handle Asynchronous Results From Api?

If either Promise.all or Promise.race are called with a non-empty array, they return a pending prom… Read more Promise.all([]) Returns A Resolved Promise, But Promise.race([]) Returns A Pending Promise. Why Are They Different?

How can I change things around in my db connection call so that I can do db.collection(): // Create… Read more How To Reuse A Mongo Connection With Promises

It's possible this should be on code review, but here we go! I have a fairly large application … Read more Wrapping Jquery $.ajax Behind A Facade In Q.js Without Refactoring

Consider this block of code: getUser(userId) .catch(function(error){ crashreporter.… Read more Javascript Promise Pattern - Differentiate Error

My code: Callbacks: const first = () => { console.log('first'); }; const second = (cal… Read more Changing My Callbacks, Promise To Async Await

I need to iterate an array (or a simple for loop) to run Ajax request to a server. The problem is, … Read more Javascript - Iterate An Array And Call Jquery Ajax Requests And Wait For A Request Finished Before Moving To Next Request?

This is similar to a question I posted today, but needs the request chained serially. I have two as… Read more Chaining 2 Asynchronous Calls (promise Api) To Run Serially

My problem is that I don't know how to know when a dynamic promise array has all the promises r… Read more How To Know When All Promises Are Resolved In A Dynamic "iterable" Parameter?

I am under the impression that these two things are not equivalent: return somePromise() .then() … Read more How To Properly Catch Errors In Promises?

How does work this promise chain? Promise.resolve(1) .then(x => console.log(1)) .catch(x =&g… Read more Promise Chain .then .catch

Following the suggestions from AngularJS validation and promises, I would like to chain confirmatio… Read more Angularjs : Chaining Promises

I have a db.js set up to do all my database calls. This is an example of one of the functions that … Read more How Can I Make A Promise Reject For Testing?

If I have the following functions: doTask1: function ($scope) { var defer = $q.defer(); … Read more Can I Use $q.all In Angularjs With A Function That Does Not Return A .promise?

I want to use Promise.all() to check if a value is in an array. My problem is when the value is not… Read more Promise.all() - How To Resolve() Without Returning Undefined Or Value

I want to set a timeout value so that if the server does not respond in that particular time frame … Read more How To Reject Promise On D3 Xhr Request Timeout?

I am using Typescript to write JS promises. I have a compound promise, i.e. promise which returns a… Read more Ensuring Asyncronous '.then()' Execution In Compound Promises

Can anyone recommend a pattern for instantly retrieving data from a function that returns a Promise… Read more Js Promise - Instantly Retrieve Some Data From A Function That Returns A Promise

I have an array of userIds that I use in getOrdersByUserId() to get the orders placed by these user… Read more Executing Promises In Array With Promise.all Breaks Them