Get result of promise js

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August undefined, 2024

WebIt doesn't return both the value and the promise itself - that statement returns the promise (which the browser console logs) and it also console.log's the data which is why you see two logs. Your two options are, as you said - use a global variable, or simply store the promise and always access it's data via a .then – WebDec 2, 2024 · The only way to do this is the same way you deal with any other promise. Via a .then callback. So for your snippet: function getActivity () { return activitiesActions.checkUserHosting (theEmail).then ( (jsonData) => { // Do things with jsonData }) } Any function that depends on an asynchronous operation must itself …

JavaScript Promises - W3Schools

WebSep 22, 2024 · According to your explanation, surely I only care about returning the resolve d Promise from inside the .then block? 2. I want to be able to assign the resolved value to a variable but it's not quite working var myValue = rUtils.grabValue().then(result => {result}); I think this returns an actual Promise object. – WebApr 9, 2024 · I need to fetch some JSON data from an API and assign the result to a variable. I can see the array of data in the console, but [abc] is always set as a Pending promise. I've tried to assign [abc] instead of logging [data] … canon pixma ts202 software download

Using promises - JavaScript MDN - Mozilla

WebAug 24, 2024 · A Promise may be in one of the following states: pending fulfilled rejected One of the most widely used examples of asynchronous operations in Javascript is a Fetch API. The fetch () method returns a … WebApr 11, 2024 · Photo by Juanita Swart on Unsplash. When working with Promises, you may come across two different ways to return a Promise: returning the Promise itself, or … WebApr 9, 2024 · Suppose in the input array we have 5 different promises now if you put all these promises into Promise.race() then from all these 5 promises if any one of them gets resolved or rejected then Promise. race() will also return that resolved or rejected promise and won't wait for the other 4 promises to get done with their job. flag status ct.gov

node.js - Get the value of a promise and assign to variable

Promise - JavaScript MDN - Mozilla

WebDec 15, 2024 · This method waits for all the promises to resolve and returns the array of promise results. If any of the promises reject or execute to fail due to an error, all other promise results will be ignored. Let's create three … WebJun 12, 2024 · Quick tips and must remembers. Async functions are started synchronously, settled asynchronously. On async/await functions, returned Promises are not wrapped. That means a) returning a non-Promise ... flag state of floridaWebFeb 21, 2024 · In brief, Promise.resolve() returns a promise whose eventual state depends on another promise, thenable object, or other value. Promise.resolve() is generic and … flag status washington state

"WebJan 12, 2024 · A common way of handling this is to map your array of ids to an array of Promises which all have to resolve before returning. See if this works for you. function updateTopStories () { return hnews.getIdsInCategory ('topstories', 60).then (function (ids) { var promises = ids.map (function (id) { return hnews.getById (id); }); return Promise.all ... " - Get result of promise js

Get result of promise js

javascript - How do I wait for a promise to finish before returning …

WebThe promise.finally () method uses in the promise.any () category to fulfill operation and display output. We can use all the methods with the iterable value. The finally () method … WebWhat do I need to do to make this function wait for the result of the promise? Use async/await (NOT Part of ECMA6, but available for Chrome, Edge, Firefox and Safari since end of 2024, see canIuse) MDN. async function waitForPromise() { // let result = await any Promise, like: let result = await Promise.resolve('this is a sample promise'); }

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WebA JavaScript Promise object contains both the producing code and calls to the consuming code: Promise Syntax let myPromise = new Promise (function(myResolve, myReject) { … WebJun 30, 2024 · 3. This is how you should do it : const bar = new Promise ( (res, rej) => res ("foo")); bar.then ( (result) => { console.log (result); // do whatever you want to do with result }).catch (err=>console.log (err)) the then handler is called when the promise is …

WebSep 22, 2024 · 4 Answers Sorted by: 11 What @dhilt said but do your stuff inside the promise callback function: utility.fetchInfo ().then (result => { doSomethingWith (result); }); Or use async/await if you are using a recent version of Node or Babel: async function myFunction () { var myVal = await utility.fetchInfo (); } Share Improve this answer Follow WebApr 18, 2024 · A catch handler that doesn't throw or return a promise that's rejected converts a rejection into a resolution. One of the key things about promise chains is that they transform the result; every call to then or catch creates a new promise, and their handlers can modify what's sent downstream as the result passes through them.

WebApr 19, 2024 · to define the request function that returns the response from the promise returned by axios.get. And then in test, we use await with request to get the resolve … WebAug 14, 2024 · A Promise object serves as a link between the executor (the “producing code” or “singer”) and the consuming functions (the “fans”), which will receive the result or error. Consuming functions can be registered (subscribed) using the methods .then and .catch. then The most important, fundamental one is .then. The syntax is:

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WebAug 15, 2024 · 2 Answers Sorted by: 6 If you want to return the Promise object to the caller, simply do: function spell (name) { return sql.get ("SELECT * FROM spells WHERE LOWER (name) = '" + name.toLowerCase () + "'") } Then, in your client: spell ('some_name').then (function (result) { console.log (result); }) Or, if you're into await ing: flags that are green and whiteWeb基本上，一個 Promise 鏈遇到錯誤時會往下尋找 Catch 處理器。這是經過模組化的非同步程式： try { let result = syncDoSomething(); let newResult = syncDoSomethingElse(result); let finalResult = syncDoThirdThing(newResult); console.log(`Got the final result: $ {finalResult}`); } catch(error) { failureCallback(error); } 在 ECMAScript 2024 中，在有 … canon pixma ts 3100 installierenWebApr 11, 2024 · Photo by Juanita Swart on Unsplash. When working with Promises, you may come across two different ways to return a Promise: returning the Promise itself, or returning the result of an awaited Promise. canon pixma ts3100 ink cartridgesWebApr 27, 2016 · The data must be used within a callback function. Alternatively in functional programming style the promise data could be map ()ed over. If your are OK using … canon pixma ts3100 seriesWebDec 26, 2024 · So, a promise is either completed (kept) or rejected (broken). Promise resolve () method: The promise.resolve () method in JS returns a Promise object that is resolved with a given value. Any of the three things can happen: If the value is a promise then the promise is returned. canon pixma ts3122 cartridge flags that are greenWebFeb 9, 2024 · Async functions wrap their returned result in a Promise, and if you want the actual value which the promise resolved to, you have to use await someAsyncFunc (). Put in a simple example: async function asyncCall () { return 1; } async function run () { console.log (asyncCall ()); // this doesn't wait for the Promise to resolve console.log … flags that are green white and yellow