Are there problems with calling JavaScript constructors as functions(without new?)

Question

Recently, I have got into a habit of calling things like RegExp, String, Number, Object, TypeError, etc without \"new\".

e.g:

throw (TypeError(\"Error\")         


        

Answer 1

As documented in another answer, some built in constructors are written to be able to be called as functions. So as long as you aren't polluting your global namespace, I believe you should be fine with the example you listed.

That being said, in most cases, I wouldn't get used to this habit; the new operator adds to code clarity, which is more important than brevity. The ability to use native constructors without the new operator is also inconsistently applied across constructors.