I have been learning javascript test scripts in Postman.Here I am just learning about callback functions and I wanted to check return value is showing in the last line of print statement but the result shows 'undefined'. Below is the…
I am trying to store a callable/closure as a class field/property. My initial attempt was this: class MyClass { protected callable $modifier; public function __construct(callable $modifier) { $this->modifier = $modifier; } } class SomeOtherClass { public static function func() {…
I'm encountering a TypeError with the message: Type '(Job) => ListTile' is not a subtype of type '(Model) => Widget' in my Flutter app when trying to build a widget by passing a callback. The callback type is defined as:…
The callback function code refused to render on my console as expected...what could be the issue? FormEl = document.getElementById ("form"); FormEl.addEventListener( "Submit",() =>{ Const userInput = inputNum.value Console.log (userInput) }) I was expecting to get back the value typed into…
I am new to Flutter. I am building an app to display some text and then create a button to remove it. I have the three following dart files- 1. main.dart // ignore_for_file: prefer_const_literals_to_create_immutables, prefer_const_constructors_in_immutables, use_key_in_widget_constructors import 'package:flutter/material.dart'; import 'quote.dart';…
I'm encountering an issue with closing a child window inside a setTimeout callback in JavaScript. Despite successfully opening the child window using window.open, I am unable to access the newChild variable within the setTimeout callback function. Here's a simplified version…
I'm following a tutorial to understand AJAX a bit better, i'm not a webdev so i'm not very skillful with JS, but i got my basics down, the example should be able to get an image on screen through way…
I have to create my own higher order filter() function to filter an array of 10 words that only returns word that have 6 or more letters but my function is only returning true and false and not omitting words…
With React Native, this app needs to: Move an object Then update text (a number) on the screen Then move another object Then update the same text (another number) on the screen Problem: #4 does not update on the screen.…
I'm trying to create the simple "press button to increase number" program in Flutter. I separated the text widget that shows the number and the button that increases the number into their own classes and files. I then imported them…