All Questions
895 questions
1
vote
1
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97
views
Why is the callback provided to `XRSession.requestAnimationFrame()` not getting called?
Here is a minimal example which reproduces a problem I have encountered in a more complex situation:
let session;
const dummyRenderLoop = (time, frame) => {
if (!session)
return;
...
- 388
1
vote
1
answer
86
views
In Javascript how is it possible to incorporate the result of a requested callback function in running code?
I come from PIC assembly-language programming where programs normally run continuously. I've now been learning Javascript for quite a while but have become a little blocked with the use of callback ...
- 23
-1
votes
2
answers
95
views
Lack of rejection handler still changes the state of the returned Promise
According to MDN docs, then() and catch() returns a pending Promise immediately and if the handler functions doesn't return anything, the returned Promise becomes fulfilled with an undefined value. So,...
3
votes
0
answers
60
views
Flow of Control between Handlers in Promises [duplicate]
I want to know why the following 2 codes are giving different outputs.
Code 1:
const motherPromise = new Promise((resolve, reject) => {
reject(new Error("Milk has spilled due to overboiling&...
-1
votes
3
answers
145
views
Unexpected outputs when implementing Promise Chaining in JavaScript
I have a task as below which I have to solve using Promise Chaining in JavaScript and I am getting some unexpected outputs -:
Task:
If Mike is able to clean the room, then he goes for football.
In ...
-1
votes
1
answer
54
views
SetTimeout () in javascript
What is the point of giving the time duation in setTimeout() function ?
Altough the callback will have to wait for the call stack to be completely empty.
For example if i write this code.
setTimeout(()...
0
votes
1
answer
120
views
Koa.js backend unable to access response body in callback function
I have a backend created using koa.js which contains a callback function to set the response body. In particular, the middleware function for the backend looks like the follow
exports....
- 63
0
votes
0
answers
17
views
Function returns undefined when returning within .then keyword [duplicate]
I have a program that returns true or false correspondingly based on the result of an asynchronous function someAsyncFunction(), which looks like the follow:
function getResult(param) {
...
- 63
0
votes
0
answers
64
views
forEach() with forOf() with async/await?
I was making this program on asynchronously typer? Where every line typed asynchronously?
This is my html
<h1 data-type data-type-min="100" data-type-max="300">How are you<...
- 21
0
votes
3
answers
115
views
Write a callback function to print three characters sequentially using a provided async function with random timeout
I was asked the following question in a JavaScript interview. I was unable to answer it. Please help!
const printString = (string, callback) => {
setTimeout(() => {
console.log(...
1
vote
1
answer
93
views
Working with multiple API calls from a Node/Express intermediate API, trying to use promise.all()
I am discovering all kinds of gaps in my understanding during this project. I am working on building an intermediate API server. Some end-points take an array of info, then make an external call for ...
0
votes
1
answer
456
views
How that node.js event loop work and how can it handle multiple requests?
I was trying to test some asynchronous code in node.js. My understanding is that if there is some asynchronous operation going on, Node.js we will work on the new request. I have written a simple code ...
- 1
0
votes
0
answers
23
views
Run time-consuming function with Promises without blocking runtime [duplicate]
I'm trying to understand how to use time consuming function with Promises. I have some nonsense, but time consuming function computation() (that I create for demonstration purpose), that would need 3-...
-1
votes
1
answer
119
views
Where are the callbacks of a promise executed?
When it is time to execute the callbacks of then, catch, or finally, where are they executed?
From what I have read on Stack Overflow, it is said that they are executed in the call stack of the main ...
user19551894
1
vote
1
answer
617
views
How to await a Microsoft speechrecognizer async function and store the text into a variable from the callback - NodeJS
const fs = require("fs");
const sdk = require("microsoft-cognitiveservices-speech-sdk");
// This example requires environment variables named "SPEECH_KEY" and "...
