How to create objects dynamically in JavaScript?

Question

JavaScript

I know this way:

var classname = "Number";
var num1 = eval(`new ${classname}()`);

The IDE swears at him: "eval can be harmful".
Is there any more correct way?

Answer 1

new (window || global)[className](); // window в браузерах, global в node

Answer 2

I will suggest this option:
function ClassName () {
// ...
}
var className = new ClassName();