There is a way to pass array elements as separate arguments in Node.js

[Finesse]

var a = [1, 2, 3];
add3.apply(window, a);

[clarkgrubb]

I don't think node has a global window object. I get "ReferenceError: window is not defined" when I try it.

[7fe]

@clarkgrubb
global works also.

Also try using this instead.

var a = [1, 2, 3];
add3.apply(this, a);

If you are nesting the functions you could set window=this or global=this at the beginning of the file

[hbarcelos]

As this function doesn't need a context call, you can just:

add3.apply(null, a)