I'm trying to synchronize calendars, but the receiving server only wants "bite-sized" data, so I decided to sync PER USER PER MONTH. Thus, I made a double loop: First I loop through all users, and within that loop, I loop…
First Approach const list = reactive([1, 2, 3, 4, 5]); const handleClick = () =>{ list.push(...[11, 12, 13, 14, 15]); list.push(...[16, 17, 18, 19, 20]); Promise.resolve().then(() => { list.push(33) }); }; Second Approach const list = reactive([1, 2, 3, 4,…
I'm a beginner. Got confused about async programming after seeing the output of this code async function f1() { console.log('this is f1'); let res = await f3(); console.log('result of f1 from f3 = ', res['status']); console.log('end of f1'); } async…
Wrestling with promises here... My users make a single request that requires multiple REST calls on the backend. I store each request made by the user and the two REST responses as an item in a 'records' array like so:…
I have a piece of code in which multiple promises are being handled using Promise.all, but one of the promise isn't resolving or rejecting but throwing error. Now my question is how to handle this error inside promise.all. Please note,…
I have function fetchData that accepts an integer id and calls promise with random resolve time const promise = (ms) => new Promise((resolve, reject) => { setTimeout(() => { resolve('Done!'); }, ms); }); const fetchData= async (id) => { const…
I am unable to understand the result of the below promise chain function job(state) { return new Promise(function(resolve, reject) { if (state) { resolve('success'); } else { reject('error'); } }); } let promise = job(true); promise .then(function(data) { ///1 console.log(data);…
I saw many issues of setTimeout not waiting even with await keyword and the answers were like use it with a promise, but I still don't get it. Doesn't async function implicitly return a promise? so, from the below code…
Recently I've stumbled upon an interesting bug. In the essence, the problem boils down to this example: const waitResolve = (ms) => new Promise((resolve) => { setTimeout(() => { console.log(`Waited to resolve for ${ms}ms`); resolve(ms); }, ms); }); const waitReject…
I am studying javascript promises. The first code works fine, but the second code gives an error. When catching errors, isn't it sufficient for the reject function to be called? I don't understand the difference between using and not using…