I have tried to implement promise chaining in Javascript with 3 simple promises. First promise I am resolving and last 2 I am rejecting. Till 2nd rejection it is working fine. But after the catch statement it is throwing error…
I am trying to catch the rejection reason of an already rejected promise, but I am getting an uncaught error. I have spent some time studying promises, but still do not understand why the error occurs. The purpose of this…
Consider the following assignments: const promise1 = (async () => { await someAsyncFunction(); })(); const promise2 = new Promise(async resolve => { await someAsyncFunction(); resolve(); }); Is there any meaningful difference between these two Promises (other than verbosity)?
I'm just learning the details of how the event loop in Node works. I learned that the promise queue takes priority over the timer queue, which takes priority over the I/O queue. async function asyncFunc() { let sum = 0;…
I have been given the task of reading a file, processing the data and returning the results. As it is an async process, I run into the problem where you cannot return from a .then, and an unresolved Promise is…
so consider the code below, when I resolve a promise the result is in pending state in the very first moment( I know after I expand the dropdown I will see the expected result but in here I'm questioning the…
I know existence of a throw inside of a promise, change the state of that specific promise to rejected and the result will be the error message, but when I type this throw inside of a setTimeout located inside of…
I'm new to Cypress and JavaScript. I want to create a loop that executes a request with different values until I get a certain response. let continue_loop = 1; loginLoop: for (let i = 1; i < 100; i++) {…
With React Native, this app needs to: Move an object Then update text (a number) on the screen Then move another object Then update the same text (another number) on the screen Problem: #4 does not update on the screen.…
I want to get data from DB based on the boolean flag. async function main() { let promises = []; if (false) { promises.push(Promise.resolve("highlights from DB")); } if (true) { promises.push(Promise.resolve("featured video from DB")); } if (true) { promises.push(Promise.resolve("categories from…