Asksearch_php.cn

Community Learn Tools Library Leisure

English

Popular searches：
PHP
MySQL
jquery
HTML
CSS

Uncaught (In Promise) error when rejecting a Promise using setTimeout() in JavaScript

I'm learning Promises in JavaScript and I decided to implement a simple Promise where I would set a timeout of 3 seconds and then reject the Promise. After rejecting it, I catch the error and display it in an HTML element. The promise runs perfectly and displays the message, but I get the following ...

P粉139351297 2023-09-05 17:39:46

javascript - Why is Promise executed immediately when returned from Promise? Please explain the principle. Thank you.

The following is the code {code...} Why is the Promise object returned in then resolved in the next then? Is the execution chain of the second then the same as the second Promise?

黄舟 2017-05-19 10:10:29

javascript - promise scheduling issues

{Code...} node is inconsistent with the browser operation. It is normal to understand that p1 resolves a promise internally and is not synchronous, so it is obviously later than p2.

阿神 2017-07-05 10:54:30

javascript - Questions about using promise

{Code...} The first parameter method of then should be that promise is executed when resolved, but console.log(b) is actually executed. Why is this?

高洛峰 2017-05-19 10:17:46

Why is it a disadvantage that a promise cannot be canceled

Under what circumstances do I need to cancel a promise?

淡淡烟草味 2017-06-15 09:22:29

How to return data from Promise response

How to correctly return data from Promise? I have the following code: const axios = require("axios").default; async function getApiData(pathName: string, locale: string) { const { axiosRequestUrl } = getApiVars(pathName, local

P粉988025835 2023-07-28 10:32:51

javascript - Promise in node is also nested

1. If there are two mongodb collections, one is users and the other is posts, and the corresponding users information is displayed in the posts list, the conventional asynchronous processing is too nested. Use Promise to solve it, and found that there is also a problem when solving promises. 2. The ...

世界只因有你 2017-06-05 11:11:11