I am class and its subclasses, where I am required to call a static method of a child from the parent. But how can I call the static method without knowing which child?
class Animal{
static doSomething(){
//How do i call the static talk here?
//talk()
}
}
class Human extends Animal{
static talk(){
return 'Hello!'
}
}
class Dog extends Animal{
static talk(){
return 'Bark!'
}
}
Human.doSomething()
Just call this.talk() from inside the doSomething static method.
class Animal{
static doSomething(){
console.log(this.talk());
}
}
class Human extends Animal{
static talk(){
return 'Hello!'
}
}
class Dog extends Animal{
static talk(){
return 'Bark!'
}
}
Human.doSomething()In the context of a static method, this will refer to class object was called on (barring any code to change it).
The calling context is the Human class, and the talk method is a property directly on it, so you simply call this.talk():
class Animal{
static doSomething(){
return this.talk();
}
}
class Human extends Animal{
static talk(){
return 'Hello!'
}
}
class Dog extends Animal{
static talk(){
return 'Bark!'
}
}
console.log(Human.doSomething())