Javascript Comma Operator

When combining assignment with comma (something that you shouldn't do, probably), how does javascript determine which value is assigned? Consider these two snippets: function nl(x)

Solution 1:

I was confusing two things, here. The first call to 'nl' is a function call with four arguments. The second is the evaluation of the comma into one argument.

So, the answer: the value of a list of expressions separated by ',' is the value of the last expression.