I am trying to create a dynamic page generator, which means having multiple pages rendered each with their own instance of a javascript class that will help things like searching and exporting table data. So my class would be like…
Since JS doesn't allow to extends more than one class, we could be with a complex inheritance chain like this class Level1 { constructor() { this.level = 1; } method1() { console.log('This is method 1'); } } class Level2 extends…
I have a class with a destructured constructor parameter: import * as ē from 'three' export class cylindricCurve extends ē.Curve { #scale: number #eqs: ((θ: number) => number)[] #rounds: number #mainAxis: 'x' | 'y' constructor({ eqs, scale = 1, rounds…
I'm using TypeScript and I want to extend Array to enforce a specific argument. This way, I can make sure that whenever I create a FruitArray, the first element is a fruit. So I tried extending Array in a class:…
So I tested this code: class C1 {} C1.prototype. f =function(){ return 1 } class C2 extends C1 {} C2.prototype. f =function(){ return super.f()+1 } And it throws a syntax error: 'super' keyword unexpected here. But if I do: C2.prototype.…
In JavaScript (assuming version is >= ES6), say that I have a class; class MyClass { constructor() { this.property = null; } } ... and I create two new instances of the class; let inst1 = new MyClass(), inst2 =…
Consider: class Welcome{ static name="something"; // Throws an error } MDN says static will be supported from Chrome 42. But it is throwing a syntax error in Chrome 70 and below versions.
I'm trying to enhance the Map class in JavaScript by adding a TypedMap subclass that extends the Map superclass. TypeMap.js export default class TypedMap extends Map { #keyType; #valueType; constructor(keyType, valueType, entries) { if (entries) { for (let [k, v]…
Assume I have the following JavaScript code class Parent { constructor () { console.log("parent"); } } class Child1 extends Parent { constructor() { console.log("child 1"); super(); } } class Child2 extends Parent { constructor() { console.log("child 2"); super(); } }…
I'm, writing the below code, I can't understand how it is working. In C# or Java when we use base or super keyword it returns values but in typescript, I'm getting "undefined". If I use "this" instead of "super" it…