promise Archives - Page 2 of 4

How to access the value of a promise?

I’m looking at this example from Angular’s docs for $q but I think this probably applies to promises in general. The example below ...

May 26, 2022
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Are there still reasons to use promise libraries like Q or BlueBird now that we have ES6 promises? [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be ...

May 23, 2022
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Axios handling errors

I’m trying to understand javascript promises better with Axios. What I pretend is to handle all errors in Request.js and only call the ...

May 22, 2022
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Is Node.js native Promise.all processing in parallel or sequentially?

I would like to clarify this point, as the documentation is not too clear about it; Q1: Is Promise.all(iterable) processing all promises sequentially ...

May 21, 2022
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Promise.all: Order of resolved values

Looking at MDN it looks like the values passed to the then() callback of Promise.all contains the values in the order of the ...

May 20, 2022
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What are the differences between Deferred, Promise and Future in JavaScript?

What are the differences between Deferreds, Promises and Futures? Is there a generally approved theory behind all these three? 5 Answers 5

May 15, 2022
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What’s the difference between a Future and a Promise?

What’s the difference between Future and Promise? They both act like a placeholder for future results, but where is the main difference? 9 ...

May 13, 2022
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Do I need to return after early resolve/reject?

Suppose I have the following code. function divide(numerator, denominator) { return new Promise((resolve, reject) => { if(denominator === 0){ reject("Cannot divide by 0"); ...

May 11, 2022
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Use async await with Array.map

Given the following code: var arr = [1,2,3,4,5]; var results: number...

May 11, 2022
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What’s the difference between returning value or Promise.resolve from then()

What is the difference between: new Promise(function(res, rej) { res("aaa"); }) .then(function(result) { return "bbb"; }) .then(function(result) { console.log(result); }); and this: new ...

May 11, 2022
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