Which of those codes works faster?

Question

I need to know which of those 2 codes works faster. The main difference is that in 2nd code I'm using hasownproperty
https://code.sololearn.com/WO8yGcyVqF9G/?ref=app
https://code.sololearn.com/WvxODIW4Unw7/?ref=app

Answer 1

You are talking about nanoseconds or possibly picoseconds difference, which can be hardly measured in a single operation.
If you wonder about such performance differences, you might feel something when you deal with millions of data points, otherwise it is negligible.
I found for you a benchmark which will show the difference between some of the object lookup methods:

https://measurethat.net/Benchmarks/Show/977/0/undefined-vs-typeof-vs-in-vs-hasownproperty

According to this, your first code (bool method, that checks the existence of a property) is very slightly faster than using hasownproperty.

Answer 2

Tibor Santa did answer your question so I'll answer "What is the meaning of the life" it is the meaning of completing the whole universe by your entity.