So as I am reading on the execution context in javascript and how does it works, everything seemed fine until I tried some examples on the this value of callback arrow functions. const printCard = function () { this.signatories.forEach((signatory) =>…
I'm not sure how to check every element to the callback and check if they are all true; I am also quite new to trying to code so sorry if it looks bad. Write a function myEvery that accepts an…
I am tying out node.js, but not able to wrap my head around why one works and other doesn't can you explain to me why this works: app.delete('/notes/:id', (req, res) => { const id = req.params.id; const details = {…
I have the following code, which loads div#b into div#a and subsequently does something with div#b: <html> <head> <script src="scripts/jquery.js"></script> </head> <body> <script> document.addEventListener('DOMContentLoaded', e => { $('#a').load('test2.html', {}, // function() { // console.log($('#b').attr('id')); // returns "b" // $('#b').html('content in…
`import 'package:flutter/material.dart'; class SkillEntry extends StatefulWidget { const SkillEntry({super.key, required this.skll}); final String skll; @override State<SkillEntry> createState() => _SkillEntryState(); } class _SkillEntryState extends State<SkillEntry> { @override Widget build(BuildContext context) { int skillvalue = 0; return Container( height: 40, width: 200,…
I am developing a Steam bot (but the question is only about JS). I have the following code: const steam = new SteamUser(); // from steam-user library function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function steamAddFriend(user_steam_id)…
So, I was recently introduced to the concept of promises and I was told for chaining purpose, we use 'then', which is actually invoked when the attached promise object is fulfilled. And, to do some work after this object is…
const myFunc = (callbackFunc) => { let value = 50; callbackFunc(value) }; myFunc(value => { console.log(value) }) I do not understand how and why this block of code runs, my main issue is with the 'callbackFunc' parameter which has been…
I was asked the following question in a JavaScript interview. I was unable to answer it. Please help! const printString = (string, callback) => { setTimeout(() => { console.log(string); callback(); }, Math.random() * 1000); }; Call function printString three times…
I am struggling to understand the following code: let myArray = ["J", "a", "v", ["a", "scrip"], "t"]; const flatten = (myArray) => { return myArray.reduce((flat, arry) => { return Array.isArray(arry) ? flat.concat(flatten(arry)) : flat.concat(arry); }, []).join(""); }; console.log(flatten(myArray)); // Output…