I just happened to see some examples of how this function worked yesterday otherwise my code would've been a lot longer im sure 😅

Mutating an argument is the worst thing you can do.

from billion variations i see solution without unrequired minmaxes (as well as mine).

in my opinion it is the best option

Thank you for this! took my understanding of parseInt a step further. Awesome.

easiest way to do it

same solution ^^

I like how short and clean this is, without being too obnoxious.

This approach is not good. It changes the parameter if it has a falsy value, for example if an empty string were passed to firstName or lastName, it would be changed to the default value, which is incorrect. The correct way is to use default parameters.

I don't think I was aware of the default parameter feature when I solved this. If I were to solve it again I would use default parameters.

What's the benefits of this approach over the top solution?
ie. assigning fields directly inside body vs. exposing them as default paramters.

Why can't i write souch a short code...
I always write long code(