I'm trying to display msg based on the return value of my function in here class Database{ private $host = DB_HOST; private $dbname = DB_NAME; private $user = DB_USER; private $pass = DB_PASS; private $dbh, $error, $stmt; function __construct(){ //…
I learned that we can't use $this:: to call static class property and should use self:: or static:: so any idea why this code works ? <?php class Test { public static string $test = 'test'; public function __construct() {…
what's the best way to solve this issue? I love the way that we can define attributes in the constructor and TS does all the magic for us to resolve the resp. lines of code in order to assign the…
Im learning OOP and decided to create a project using it. I feel like I'm not sure if I'm using it correctly. const btnCalculate = document.getElementById('work'); const spanOne = document.querySelector('.first'); const spanTwo = document.querySelector('.second'); class PayDay{ constructor(hours, payRate){ this.hours =…
As far as I know, when a class extending another class, It's should override all abstract methods of parent class and It can also override non-abstract methods And also when a class implementing an interface, It's should override all of…
I'm working with the inheritance chain of 3 extendable classes. Renderer (Base) -> Mailbox (Child) -> MailboxInbox (final child) Each of them has it's own render method. Child's just override the Renderer (Base) render method At the end they anyway…
why I am getting a age getter in main Object it should be in prototype only class PersonCl { constructor(fullName, birthYear) { this.fullName = fullName; this.birthYear = birthYear; } // Instance methods calcAge() { console.log(2037 - this.birthYear); } greet() {…
I've an asp.net core with react project, I have this code here inside my react component: const staticTxt = stattxt.filter(x => x.id === userIdD && x.taskId === item.id)[0]; I did a console log for each variable in this line and…
Whenever you extend a class in JavaScript or Python, the derived class must use the super keyword in order to set attributes and/or invoke methods and constructor in the base class. For example: class Rectangle { constructor(length, width) { this.name…
I have a method that translates HTML into another language. Inside that method is a try, catch block that handles network errors. I have another method that returns true if an error occurred. And another that displays the error message.…