How can I construct an object using an array of values for parameters, rather than listing them out, in JavaScript?

Question

Is this possible? I am creating a single base factory function to drive factories of different types (but have some similarities) and I want to be able to pass arguments as

Answer 1

One possibility is to make the constructor work as a normal function call.

function MyClass(arg1, arg2) {
    if (!(this instanceof MyClass)) {
        return new MyClass(arg1, arg2);
    }

    // normal constructor here
}

The condition on the if statement will be true if you call MyClass as a normal function (including with call/apply as long as the this argument is not a MyClass object).

Now all of these are equivalent:

new MyClass(arg1, arg2);
MyClass(arg1, arg2);
MyClass.call(null, arg1, arg2);
MyClass.apply(null, [arg1, arg2]);