Promise - Related information

• What is the return value of Promise's excutor?

  when reading Promise : var promise1 = new Promise(function(resolve, reject) { setTimeout(resolve, 100, foo ); }); if an error is thrown in the executor function, the promise state is rejected. The return value of the executor function is ignored...

  Javascript promise

  Mar.01,2021
• The question about promise

  a () { return new Promise((res, rej) => { : getData().then(res => { this.data = res.data.reslut console.log(this.data) }) }); } the a method is defined in vue , and the a method is ca...

  Promise javascript

  Mar.01,2021
• In nodejs, stats is used to judge whether the file is a folder, and the resolve () statement of promise is placed in the block of judgment statement, which leads to the error of the program.

  recently in learning the koa framework to build a node environment, writing a small case requires the following: the node program reads a path, and if it is a folder, put the folder name into the list collection. Promise is used in the program to do asy...

  Koa.js promise

  Feb.28,2021
• The problem with promise

  as soon as I came into contact with promise, I wrote a demo by myself. Ask . Why my then only executes once, and how to make it execute multiple times var test = 0; var promise = new Promise(resolve => { $( .btn ).on( click ,()=...

  Promise javascript

  Feb.28,2021
• If promise.all has two p objects, can't the parameters passed to the callback function be divided into two results?

  for example Promis.all([p1,p2]).then((p1result,p2result)=>{}); if p1 returns [1mem2p3] p2 returns [4mage5magin6] the final result is a parameter [1mem2magin3], what should I do if I want to use the results of two p objects respectively? ...

  Promise callback-function

  Feb.28,2021
• Mini Program's request failed due to the difference between the encapsulated promise and the direct request parameters.

  this is encapsulated function request(url, params) { let promise = new Promise(function (resolve, reject) { wx.request({ url: url, data: params, header: { X-Token-With : token ...

  Promise

  Feb.27,2021
• Js performs asynchronous operations in a loop and then adds each asynchronous result to an array. How can this array be used outside the loop?

  How does the code return only the result after the last asynchronous operation in the for loop is completed as shown in the figure? Please stop by and give me a hand. ...

  Javascript promise for-cycle

  Feb.26,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-34d89f7-21045.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-34d89f7-21045.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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