Understanding JavaScript promise object - Stack Overflow
Sep 13, 2016 · Promise is a object that represents the completion or failure of a event . Promise is a asynchronous thing in JS which means that it's executed, but the program won't wait until it's …
javascript - How do I wait for a promise to finish before returning …
I'm still struggling with promises, but making some progress thanks to the community here. I have a simple JS function which queries a Parse database. It's supposed to return the array of …
javascript - Resolve promises one after another (i.e. in sequence ...
Jul 5, 2014 · This question is old, but we live in a world of ES6 and functional JavaScript, so let's see how we can improve. Because promises execute immediately, we can't just create an …
javascript - How to pass parameter to a Promise ... - Stack Overflow
Feb 10, 2016 · This might seem a silly question but I am a newbie in this topic. I am working with Promises on Nodejs and I want to pass a parameter to a Promise function. However I could …
javascript - Wait for multiple promises to finish - Stack Overflow
All calls are executed immediately, then Promise.all() just waits for all these promises to complete before it completes itself. This is not a Promise.all feature. With this code Promise.all([ …
javascript - Promise - is it possible to force cancel a promise
May 14, 2015 · In modern JavaScript - no. Promises have settled (hah) and it appears like it will never be possible to cancel a (pending) promise. Instead, there is a cross-platform (Node, …
javascript - How do I await multiple promises in-parallel without …
- Handling errors in then is anti-pattern because Promises has a dedicated way of dealing with errors in the catch branches so developers expect values in then and errors in catch. Mixing …
Exactly when were JavaScript promises created? - Stack Overflow
Dec 3, 2017 · The new method: Promises. So, where do promises come into this story? Promises is a fairly simple abstraction which is (at least in JS), built on top of callbacks. In other words, …
JavaScript ES6 promise for loop - Stack Overflow
Oct 30, 2016 · Promise.all(array) also returns an array of promises after successfully executing all the promises in array argument. Suppose, if you want to update many student records in the …
Javascript push a promise into an array - Stack Overflow
Nov 6, 2017 · I need to wait for all the useSpecialAbility to be done before moving on with my code. Some of them will write/read from the database, that's why I used promises. In that case …