Unary plus operator. Cool.

Nice, can make it slightly more compact using arrow functions.

return dna.split('').map((key) => pairs[key]).join('');

same bro, idk anthing i thouht it was easier but its not

I also did the same lol

i feel dumb

nice

best approach ever

This is literally one of the best basic features of this site.

Noice!

Wonderful!

It's the amazing part about resolve this problems. I'm starting my journey, learning Javascript but after finishing the problems the possibility to see the solutions from this nice people is cool because I can learn a lot from them.

Nice one, simple and effective

Nice one!

This is not best practice because PEP 20 – The Zen of Python: "Explicit is better than implicit."

Excelent, I didn't even know that function exist, I am learning a lot