Question

In javascript, I have noticed two ways of throwing an error:

1)

throw "An error";

2)

throw new Error('An object error')

Is there any advantage of choosing one way over the other?
Is one considered a better practice?

Thanks

Answer 1

An Error object has nice little extras like error.name and (in Firefox) error.stack.

If you need those, do throw an error explicitly. However, most people merely use the error.toString() method (often called implicitly). In the latter case it’s overkill to create an Error object in the first place, so throwing a string works just as well.