[JS/ES6] Some questions about objects

Question

I have two questions about the old/new (ES6) way to define objects.

In old JS I can create a "class/prototype" like this:

function myClass(property1, property2, ...) {
this.property1 = property1;
this.property2 = property2;
... ;
}

But how about calculations inside the class definition? Is it possible in JS? My idea would be something like this:

function car(color, date) {
var now = new Date().getFullYear();
this.color = color;
this.date = date;
this.age = now - this.date;
}

And how do I create an "empty" class/prototype in ES6?

This doesn't work since it's an object definition:

let car = { color, date }

How do I create classes in ES6? Is it possible?

Many thanks in advance.
Pete

____________________
P.S.: Take a look at my code
https://code.sololearn.com/WM2DM8HXHxkb/?ref=app

Answer 1

You could define a method name9d aged after the constructor (and inside the class) like this:

class Car {

// constructor

// method(arg) {}

get age() {
return NOW - this.date;
}

// ...

}

now mycar.age will return the age

Answer 2

class Car {
constructor(color, date) {
this.color = color;
thid.date = date;
}

method(arg) {}
}

let myCar = new Car('blue', 2000);

Answer 3

Thanks, and what about the calculations?

Taking my example:
car.age = NOW - car.date

Is something like this possible?

Answer 4

Are the "class" and "get" keywords new to ES6?
I am still going through the ES6 course, but right now I'm at lesson 4/10.

Btw, it works:

https://code.sololearn.com/WAA86StTPfHR/?ref=app

Once again, many thanks Pytness 🙏

Answer 5

Yes, you have the keyword 'set' too by the way

Answer 6

Many thanks! 🙏
I will try it out right now