I have three URLs I need to access in my code. The first two will always be accessed, but the third one might be accessed zero, one or two times. As all URLs take a lot of processing, I don't…
I tried to write a function that requests only limited amount of mock endpoints at one time. As soon as one request is resolved, the next one is fetching. Here is my code: const requestQueue = (endpoints, callback, limit =…
In JavaScript, in the array of promises (can have n promises), run first n promises, when finished, run another n; Example: const promises = [Promise_1, Promise_2, Promise_3, Promise_4, Promise_5, Promise_6]; Run Promise_1 and Promise_2, when both finish, run Promise_3, Promise_4,…
So, I was recently introduced to the concept of promises and I was told for chaining purpose, we use 'then', which is actually invoked when the attached promise object is fulfilled. And, to do some work after this object is…
This is my code, I don't know what happened when I using the async keyword, if remove the async keyword, the result of print is different async function async2() { return new Promise((resolve) => resolve('hello')) } async2().then((res) => { console.log(res)…
I have a JSON object I want to stringify. Some of the values in this object are Promises. How can I use the replacer parameter in JSON.stringify() to pass the result of the Promise, instead of the promise itself? To…
I have a Node.js application that users can interact with. Users can request a title (A or B). It takes some time for the application to hand out the title. After the title is given, the user gets to keep…
I am learning promises in javascript and I decided to implement a simple promise where I would set a timeout of 3 seconds and then reject the promise. Upon rejecting it, I am catching the error and displaying it in…
I have a fetch() call in function myFetch() (returns the fetch's return value), and would like to wrap it in another function callApi(). My goal is to make callApi() return a Promise, such that: A "resolve" state indicates success (the…
I am trying to receive a list of book IDs from my API. For each book ID, I want to fetch its data from Google's book API. Once all book info has been retrieved, I want to render divs for…