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I write a log entry to the log when an uncaught exception occurred in my nodejs app. process.on(… Read more Nodejs Process Crashed Without An Exception

I am trying to make a crawler, and as the data is not showing in the page source, I can only execut… Read more Javascript Promise Return Value

I use dom-to-image.js for converting dom to png image. As dom-to-image.js uses promise, the code ex… Read more How Make Promise Execute Synchronously?

My idea is. I have limited number of workers. This workers must do some job. When worker done with … Read more Limited Number Of Javascript Promises Is Not Working If Running In Infinite Loop

I know what asynchronous iteration is. But ever since MDN & node.js 10 introduced it in 2018 I … Read more Some Practical Example Of Asynchronous Iteration(for-await-of) In Action?

I'm trying to seed my knex data into my postgres database. However, I noticed that inserts from… Read more Knex Seed: Insert Out Of Order From Promise

submitTCtoDB() { console.log('this.selectedFileList is: ' + this.selectedFileList) thi… Read more Call Then Only After Method Returning Promise Is Finished

I'm in a problem using Promise.all(). I'd like to pass an array variable as an argument to … Read more How To Use Promise.all() When I'd Like To Pass An Array Variable As An Argument

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?

I have the chain of promises below. By looking at the logger statements, I would expect the console… Read more Execution Order Of Promises

I am creating a blogging website, and am writing code that does the following in order: 1. stores m… Read more Firebase Web: Upload Multiple Files To Storage An Then Download Their Urls

The Promise.all MDN docs contain an example of evaluating multiple Promise.all results, but within … Read more Using Settimeout With No Timeout Value While Evaluating Result Of Promise.all

I have been reading up on methods to implement a polling function and found a great article on http… Read more Incorporating Async Actions, Promise.then() And Recursive Settimeout Whilst Avoiding "deferred Antipattern"

(Related but not quite the same: JS Promises: Fulfill vs Resolve) I've been trying to wrap my h… Read more Does "resolve" Consistently Mean Something Distinct From "fulfill"?

I am trying to test a method using Jest... The method should return Promise.reject() . Here is the … Read more Expected One Assertion To Be Called But Received Zero Assertion Calls

When I run this code using Node, it throws an Unhandled promise rejection error in the console (eve… Read more Weird Behavior With Promise Throwing "unhandled Promise Rejection" Error

Here is my Node.js script: pDownload('http://serv/file', 'localfile') .then( ()=&… Read more Es6 Giving Syntaxerror: Unexpected Token )

I have two functions which are starting asynchronous loading of resources. How can I make them retu… Read more How To Create A Promise For Nested Async Calls

const setTimeoutProm = (delay) => new Promise(res => setTimeout(() => res(delay),delay)) … Read more How To Correctly Resolve A Promise Within Promise Constructor

I am doing sorting in asc and desc. I want to make logic if User click first time I want to update … Read more How To Toggle On Order In Reactjs