How to pass the value 'undefined' to a function with multiple parameters?

Question

I want to pass the value of \'undefined\' on a multiple parameter function but without omitting the parameter.

What do I mean with \"without omitting the paramet

Answer 1

An easy way of doing this, when acceptable is to pass undefined. But better yet as follows per W3C

Javascript-missing arguments

function myFunction(x, y) {
if (y === undefined) {
      y = 0;
    } 
}