promise returning undefined AXIA

Click an available time slot on the calendar below to reserve a room. Problem is that Promise.all() return undefined. javascript - Promise.all is returning undefined - Stack Overflow Your test function does return a undefined. doesn't return anything, the promise returned by then gets resolved with an undefined value. Stack Overflow - Where Developers Learn, Share, & Build Careers Description The static Promise.resolve function returns a Promise that is resolved. archy-bold commented on Sep 6. Why is 'new Promise()' returning 'undefined'? - Stack Overflow To do that there is two popular way described below. 8 People found this is helpful async-await javascript promise reactjs Advertisement The primary way of interacting with a promise is through its then method, which registers callbacks to receive either a promise's eventual value or the reason why the promise cannot be fulfilled. to be compatible with ES5. Home Web Design Programming Languages Database Design and Development Software Development Tools Artificial Intelligence Mobile Development Computer Science. change var promise = to return . In Example 2, the getGithubOrgs(url) function calls the Fetch API, which returns a Promise that resolves to a response object. You will need to use the promise to get access to the offers. Modified 3 years, 11 months ago. Angular 5 Promise returns undefined, Angular service returning undefined to component, Angular 2 - Http with promise return Undefined, Angular observable return undefined results. How To Return Data From JavaScript Promise | CodeHandbook It does return a promise but does not have the ability to convert callback based functions to Promises that can be used with await. If it rejects, it is rejected with the reason from the first promise that was rejected. It may be either fulfilled or rejected for example, resolving a rejected promise will still result in a rejected promise. Just return the promise directly. edited to join this conversation on GitHub . You want to do it prior (but there's more, keep reading): let throttleAsync = function(url) { return promise.then(() => { The catch() method returns a Promise and deals with rejected cases only. Ask Question Asked 3 years, 11 months ago. Mar 16, 2022 P Paulie Guest Mar 16, 2022 #1 Paulie Asks: Firebase Promise Returning Undefined Data Javascript I've followed several guides on how to correctly wait for the data from my ListFile () function. You'll have to change the way you code. However, in the promise completion block it's always undefined. always return 'undefined' Node. Target is to fetch pets from api and if pet not exist to return altered array with only existing pet names. If the new Promise resolves, then two will also resolve by taking the new Promise 's resolved value as its own. Examples JQuery Ajax function returns undefined : r/learnjavascript - reddit Keep Your Promises in TypeScript using async/await Promise is returning undefined. I am resolving it and returning it to my title in my . I hope that was clear enough! Angular, Angular 5 Promise returns undefined - w3guides.com You cannot return data that is being loaded asynchronously. None of the above worked and in my case the problem was that I was adding a mock in a __mocks__ directory next to the file, but the import used a 'scoped module'. From Node Lecture Asynchronous JavaScript : 8- Consuming Promises Hello Forum, I'm confused why the third then( ) always return undefined. Fails in IE 11 with error SCRIPT5009: 'Promise' is undefined. Promise is returning undefined - extends.run It cannot succeed or fail twice, neither can it switch from success to failure or vice versa. Promise.all(promises) .then(objects => { var music = objects[0] console.log("music", objects[0]) // This prints out "music undefined" profile.music = music } The weird thing is when I print out the iTunes api result that I'm returning in the promise, it prints fine. This means you will get undefined as the return value of apiGetAll. [Solved]-NodeJS - Promise returns undefined object inside a redis pool await-node.js score:0 Accepted answer in your attempts you use await configPool.get ('allImages', async (err, reply) => { firstly, .get doesn't return a promise, so await ing it makes no sense secondly, you're not using await inside the callback, so no need to make it async But async/await would have made it clearer that you have to set state in the the callback because the value doesn't exist until the promise returns. Try it Syntax Promise.all(iterable) Parameters iterable An iterable (such as an Array) of promises. Use of async or await () function. It rejects when any of the input's promises rejects, with this first rejection reason. returns an already fulfilled promise, the promise returned by then gets fulfilled with that promise's value as its value. Why is my promise returning undefined? - SemicolonWorld Stack Overflow - Where Developers Learn, Share, & Build Careers My recommendation is to restructure the code to use promises throughout. This returned promise fulfills when all of the input's promises fulfill (including when an empty iterable is passed), with an array of the fulfillment values. Why is my Promise returning undefined in main.js from a module - CMSDK Promise.prototype.then() - JavaScript | MDN - Mozilla Answer 1. Jest mock/spy returns undefined even when set up #9131 - GitHub If we are now returning anything inside two, TypeScript will replace the previous Hey with an undefined. The argument is a function providing two arguments: a resolve and . Viewed 3k times -1 I have have array with three pet names. How to handle Promise.all properly: Getting undefined - CMSDK The JavaScript language Promises, async/await June 18, 2022 Error handling with promises Promise chains are great at error handling. Use of setTimeout () function. Promise can be resolved with undefined but not reflected in type [Solved] Firebase Promise Returning Undefined Data Javascript How to return data from promise; Export Cookie Jar to JSON with Node Request; node.js call external exe and wait for output; node.js resolve promise and return value; How can I send an object to a file, process that object, return and get the result because I'm missing something here and I do not understand why I get undefined and my Promise . When calling a function that returns a promise, comes back as undefined unless async operators are removed, then returns ZoneAwarePromise, but contains no data. javascript - Issues with returning Axios in vue - Stack Overflow Your estimation () function returns undefined instead of returning a promise, that is because you return the new string from the callback function. Only works in IE 11 if bluebird.min.js script element is uncommented. // create an array of items from obj const items = Object.keys (obj); // turn it to an array of promises for database queries I think I know why, because I return the Axios within an async function. Already have an account? Return a Promise in TypeScript | Delft Stack The second one can now pass to the third .then() and so on. But how can I use .then () to get and use the response in the vue file. Why are all the values in my returned promise object undefined? A promise represents the eventual result of an asynchronous operation. JavaScript Promises: an introduction Promise.resolve() - JavaScript | MDN - Mozilla If a promise has succeeded or failed and you later add a success/failure callback, the correct callback will be called, even though the event took place earlier. There are a number of copies of this issue floating around and most of them are labeled as a dupe of #4260 , however on cursory glance of that issue I think perhaps the reality is that #4260 is a a prerequisite before fixing this issue. "'Promise' is undefined" error in IE11 even though targeting ES5 javascript - Promise return undefined - Stack Overflow A JavaScript Promise object can be: Pending; Fulfilled; Rejected; The Promise object supports two properties: state and result. Finally, then() returns a new Promise that resolves to JSON. Returning undefined object from a firebase snapshot Promise.prototype.catch() - JavaScript | MDN - Mozilla Returning array from promise is undefined - cmsdk.com fmarsella February 15, 2021, 1:57pm #1. I know the query returns data when the function executes, it however does not seem to pass that data to the actual return part of the function call. How to fix async function which returns `undefined`? - Tutorialink catch (error) {.} getId Cannot read property 'then' of undefined . Promise.resolve (value) This resulting Promise is received by the then() method, which parses the response to JSON using the json() method. If you try running the above code, the result logged will be undefined. 1 People found this is helpful async-await javascript node.js Advertisement The reason it is returning undefined is because get_message () is not returning anything. I know the query returns data when the function executes, it however does not seem to pass that data to the actual return part of the function call. For that you need to use the original Promise constructor. A promise can be one of the three states below. When a Promise object is "fulfilled", the result is a value. Promise.resolve(r) fetchIDs (GET ). Runs without error in IE11. When calling a function that returns a promise, comes back as undefined unless async operators are removed, then returns ZoneAwarePromise, but contains no data. javascript - Promise.all() return undefined - Stack Overflow How to wait for a promise to finish before returning - GeeksforGeeks 'return await promise' vs 'return promise' in JavaScript One is incorrect. you're currently immediately resolving your outer promise but with an inner promise, and that inner promise doesn't return anything at all, hence undefined. I have logged the output to the console in ListFile () so I know the data is correct. As an async function, readThatSHIT wraps the empty return value (undefined) in a promise and returns that. Why is this promise returning undefined? - JavaScript This happens because after making a call to getResult method, it in turns calls the getPromise method which gets resolved only after 2000 ms. getResult method doesn't wait since it doesn't returns a promise. If you return a Promise, the resolution of this two determined by the fate of this new Promise. function fetchIDs {. If the returned promise fulfills, it is fulfilled with the value of the first promise in the iterable that fulfilled. But whenever I use it, it always says that .then () is undefined. Returning a Promise value from fetch - The freeCodeCamp Forum throws an error, the promise returned by then gets rejected with the thrown error as its value. In some cases, you may want to check the status of the promise. How to Fix "Promise resolver undefined is not a function" in Node.js or Promise.all() return undefined. I'm trying to get a value back from this promise but it keeps returning undefined on my template.If you look at my getLabel function, I am getting the label in the argument which is a promise. Your code proceeds . If a function returns a Promise, it means that the result of the function call is not available. Reserve a Room | Karl Miller Center And we can not access the real output when it is available using the Promise return by the function. The documentation mentions it. Promise Object Properties. Error handling with promises - JavaScript - Jaromanda X Jun 22, 2017 at 6:36 Share Follow answered Aug 18, 2015 at 6:49 Matt Way 31.4k 10 77 83 4 Thanks Matt - your suggested change makes it work as expected. stopAll () { startmeetingApi.stop ().then ( (res) => { this.transcript = res.data.transcript; }); console.log (this.transcript . [Solved]-NodeJS - Promise returns undefined object inside a redis pool Async Promise returns undefined or zone aware promise with return countQuery.then (.). It is just that resolve is not a valid function on the promise object. Promise.reject (reason) Returns a new Promise object that is rejected with the given reason. You get a promise of a result. So instead of: var list = _getById({ groupId: 42}); console.log("Our list is: "+list); You'll: If you added, say, return 'finished'; to the end of get_message (), then your var a would end up having the value 'finished' instead of undefined.

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