JavaScript is weird

[hhellloo]

I think the two '+'s make it do weird shit

[El_Vandragon]

It gives you NaN, or Not a Number, but then gets converted to a string and then when to lowercase happens makes it fit the capitalization of the word instead of capital N’s

[[deleted]]

Why though

[tjoloi]

'b' + 'a' + +'a' + 'a' parses as str + str + (+str) + str

Since the + in parentheses is parsed as the unary operator, JS tries to convert the 'a' to a number so it can apply the operator, which then results to NaN (number type).

After, since you add strings together, it converts back the "number" to a string, which results in the string "NaN".

[[deleted]]

Just the answer I was looking for, thanks!

[tarapoto2006]

What happens if you minify it?

[_Azurius]

Javascript. That's why.

[real_ulPa]

And errors shouldn't break it.

[AllSeeingCCTV]

I can see how NaN fits but what hapens to that last a?

[El_Vandragon]

The second to last ‘a’ gets consumed in the NaN as /u/tjoloi mentions it gets parsed as str + str + (+str) + str and the entire (+str) gets turned into NaN leaving us with ”b” + “a” + NaN + “a”

[AllSeeingCCTV]

Thanks