I have the following JS function that fetches data and put in a window.data property: function fetchData() { if (window.data) { return Promise.resolve(window.data) } else { return fetch('http://example.com/data.js') .then(response => response.json()) .then(json => window.data = json) } } The code…
How do I make sure all promises are resolved properly? Here even after the execution of the function some statements are still getting printed(the ones where I have added comments). I feel getAllRecords is not completing promises properly. Where am…
I am developing a Steam bot (but the question is only about JS). I have the following code: const steam = new SteamUser(); // from steam-user library function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function steamAddFriend(user_steam_id)…
I want to get a js variable as soon as it's defined. I tried this: function waitForCondition(variable) { function waitFor(result) { if (result) { return result; } return new Promise((resolve) => setTimeout(resolve, 100)) .then(() => Promise.resolve([variable])) .then((res) => waitFor(res)); }…
For some reason my promise is not being resolved on time. I can't understand why, as my functions aren't asynchronous. What I'm trying to achieve is to go through an entire array and resolve a promise only after all the…
I was experimenting with this code: let with999 = Promise.resolve(999); let returnCatch = with999 .catch(reason => { console.log("catch: " + reason); }); returnCatch.then(data => { console.log("then: " + data); }); when I suddenly realized that: The promise with999 is fulfilled…
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then#description Thenable objects that arise along the then() chain are always resolved — the onFulfilled handler never receives a thenable object, and any thenable returned by either handler are always resolved before being passed to the next handler. This is…
I'm attempting to create a function that will execute simultaneously to send images for Cloud Firestore. At the moment I'm attempting to simulate a request with setTimeout to understand how the function works. Although I can't seem to get it…
I am using Promise.all to handle multiple promises simultaneously, but I also need to run a function for each resolved promise. The issue I'm facing is that if I pass the function directly to the .then() of the promise, it…
var p = new Promise(function(resolve, reject) { setTimeout(function() { resolve("OK"); }, 2000); }); p.then().then(function(data) { console.log(data); }); I don't understand what happens after the first "then" is called. When the first "then" is called it returns undefined, which in turn…