Is there a way in Javascript to make an Object containing expressions of both classes and subclasses of it? I tried this way, but I guess I can't refer to the superclass this way.
const myClasses = {
'animal': class {
a;
b;
constructor(x, y) {
this.a = x;
this.a = y;
}
},
'dog': class extends animal {
constructor(d, e) {
super(d, e);
}
bark () {
console.log('woof!');
}
}
}
It looks like the OP is aiming for an index of classes that can be instantiated based on a key. How about, define the classes as you normally would, then refer to them in the index...
class animal {
a;
b;
constructor(x, y) {
this.a = x;
this.a = y;
}
}
class dog extends animal {
constructor(d, e) {
super(d, e);
}
bark() {
console.log('woof!');
}
}
const myClasses = { animal, dog };
const myAnimalName = 'dog';
const klass = myClasses[myAnimalName];
const myAnimal = new klass()
myAnimal.bark()It feels a bit weird, but a solution to this was to split it up into multiple steps. If the super class is declared, it can be referred to in a second step, obviously.
MDN: Class expressions must be declared before they can be used
const myClasses = {
'animal': class {
a;
b;
constructor(x, y) {
this.a = x;
this.a = y;
}
}
}
myClasses.dog = class extends myClasses.animal {
constructor(d, e) {
super(d, e);
}
bark () {
console.log('woof!');
}
}
If there is a way to do it in one step, I'd still like to know.