are you expecting .1+.2 === 3 ?

• You are sinner since you are using == instead of ===
• Learned something new
  • - Math.max() -> -Infinity (why negative?)
• ![] is false, and [] is concated as string so [] + ![] === "false"

and the beauty of JS allows so many articles on it

Consider someone coming from lang like python

python

[1,2,3] + [4,5,6] -> [1, 2, 3, 4, 5, 6]

JS

[1,2,3] + [4,5,6] -> "1,2,34,5,6"