I'm from java background. I use Generics in java in following way:
class ApiResponse<T> {
T data;
T getData(){
return T;
}
}
I'm unable to use generics in javascript ES06. I wanna know whether it's possible or not creating generic classes?
How do you like this, Elon Musk? Pure js, no typeflow/typescript
class BaseClass {
hello = function () {
console.log('hello!');
}
}
function GenericClass(T, Base) {
return class extends Base {
field = new T();
}
}
class DerivedFromGeneric extends GenericClass(String, BaseClass) {
greet = function() {
this.hello();
console.log('greetings ', this.field);
}
}
let i = new DerivedFromGeneric();
JavaScript is a dynamically typed language and it doesn't have any generics. You can write a normal function/method, it will work for all types.
P.S. Use Typescript if want to code like you do in Java.
Javascript in itself doesn't provide any syntax to support generic classes. But it's possible using:
Flow
or
Typescript
Let me show an example of using generic class using Flow in javascript ES06:
export class ApiResponse<T> {
data: ?T = null
}
Javascript doesn't have strict typing so there is no need for Generics because all variables can be assigned to any type at any time.
You can use Typescript for this purpose.
