Category "promise"

async await with setInterval

function first(){ console.log('first') } function second(){ console.log('second') } let interval = async ()=>{ await setInterval(first,2000) await se

401 unauthorized browser alert after fetch call with bearer token in react

I have a get fetch request with header having Bearer token, getting 401 unauthorized error, even if the response status condition checked in the then statement,

Do not fail whole task even if one of promises rejected

In redux saga if we want to handle multiple promises, we can use all (which is equivalent of Promise.all): yield all( users.map((user) => call(signUser, u

When Updating to HttpClient: Uncaught in Promise/Http Failure during parsing

In my angular app I'm updating from Http to HttpClient, which doesn't seem to work when working with Promises. It seems like you need to use a little 'work-arou

fetch response.text() returns pending promise

I test the fetch API with jsonplaceholder URL, but my function returns "Promise State: Pending", and I don't understand why : function getUsers(url) { return

What are asynchronous functions in JavaScript? What is "async" and "await" in JavaScript?

This Q&A is aimed to give clear answers to the following questions: What are asynchronous functions in JavaScript and when and how do we use them? What are

Returning Promises from Vuex actions

I recently started migrating things from jQ to a more structured framework being VueJS, and I love it! Conceptually, Vuex has been a bit of a paradigm shift fo

Why does a syntax error occur after restart?

I'm running my little testsite on localhost (although currently there isn't even serverside interaction yet). Everything worked fine until I restarted my PC. O

How to know when all Promises are Resolved in a dynamic "iterable" parameter?

My problem is that I don't know how to know when a dynamic promise array has all the promises resolved. Here an example: var promiseArray = []; promiseArray.p

SequelizeForeignKeyConstraintError on nested findOrCreate inside a loop

I am trying to insert multiple rows on 2 related tables using sequelize with mysql. Based on sequelize transaction cannot insert because of foreign key? I trie

TypeError: res.status is not a function

I'm making a function that permits me to upload a picture to imgur in my express api (nodejs), i'm encoutering an error when calling a function returning a prom

Promises with http.get node.js

Im am doing nodeschool exercises , the This problem is the same as the previous problem (HTTP COLLECT) in that you need to use http.get(). However, this

delay NgModule declaration with async import module

I would like to dynamically import a third-party module and check it. Then declaration in NgModule depends on it exist or not(true/false). Something like my cod

async/await always returns promise

I'm trying async/await functionality. I have such code imitating a request: const getJSON = async () => { const request = () => new Promise((resolve, r

Asynchronous execution of a function App Script

I've been digging around, and I'm not able to find references or documentation on how I can use Asynchronous Functions in Google App Script, I found that people

Use async await with Array.map

Given the following code: var arr = [1,2,3,4,5]; var results: number[] = await arr.map(async (item): Promise<number> => { await callAsynchron

wait for promise before exit process

I'm trying to run a NodeJS code that reads some data fields from an array, use them to do a database query to check if the data is duplicate before inserting th

Using Promises with fs.readFile in a loop

I'm trying to understand why the below promise setups don't work. (Note: I already solved this issue with async.map. But I would like to learn why my attempts

Node.js readline inside of promises

I'm trying to use the node.js package readline to get user input on the command line, and I want to pipe the entered input through promises. However, the input

How to wait for a JavaScript Promise to resolve before resuming function?

I'm doing some unit testing. The test framework loads a page into an iFrame and then runs assertions against that page. Before each test begins, I create a Pro