I’m attempting to map and format data to render it into a table. I have an array of promises that I’m attempting to resolve with Promise.all(). but it seems to not be returning the result of the promise. my code is as follows: my data copy variable only returns as : where the result is the correct…
Tag: promise
Why doesn’t the add wait for the timeout promise to resolve?
Trying to play with how promises and async code works by making a calculator that will give me the answer after the given ms. Why isn’t the add function waiting for the timeout? It goes directly to resolve regardless of how many ms I pass in. Omitted reject to make it more clear. Answer You call resolve…
Javascript: how to create an infinite-loop of promises?
I want to write in Javascript the following pseudo-code: I’ll explain it in words: asyncOperation uses a Promise, for example an AJAX call. I want that if the promise is rejected, then asyncOperation will be invoked again. Do you know how it can be done in Javascript? Answer If you’re going to use…
How to get a value in async function as soon as possible?
I’m working with Ethereum blockchain, but my problem my is JavaScript (async, await function). Here my code simplified: In my html In my App.js file Any help with any code of example? Thanks a lot in advance. Answer Welcome to the fantastic world of asynchronism… One way to do this would be : and …
script ends despite unresolved promise
Consider this: The scripts terminates at the await and the log is never printed to sdout, I don’t understand why Answer Nothing is wrong with your code. That’s just the model of Node. If there is no pending I/O pending promises don’t prevent Node from exiting. You can schedule some I/O if yo…
Node: Using promise.all() to call API’s in parallel?
I’m a bit confused how promise.all work, does it run the array of promises in parallel? So here is a sample code From what I observed, Promise.all runs the promises in parallel, and wait for all promises to finish. Answer does it run the array of promises in parallel Promise.all doesn’t, no; your …
Updating Firestore Documents in Parallel Using Promise.all()
This question concerns the Firestore database, but, more generally, it concerns making async requests in parallel. Simply put, I wish to update multiple Firestore documents as quickly and efficiently as possible by mapping over an array of their document IDs. the .set() method is async (returning a promise) a…
Google Cloud Function async with multiple fetch requests
I’m new to both GCF and Javascript async and have been struggling with this. I perform a fetch call initially and then pass that response as a parameter to a second function which then also performs a separate fetch call. During the second function, my empty initialized json gets properties added to it,…
How to alter a API response with Javascript
I wrote this little app that takes in a set of starwars characters and returns images in an array. The result of the above code looks like this : But i would like a result where i can know which image belongs to which keyword. Maybe a format like this or something similar : I tried this : Results were
How do I make multiple fetch calls without getting 429 error?
I came across a problem in a book which I can’t seem to figure out. Unfortunately, I don’t have a live link for it, so if anyone could help me with my approach to this theoretically, I’d really appreciate it. The process: I get from a fetch call an array of string codes ([“abcde”…