Convert mixed whitespace and comma into array

parse.js

// Let's say you want a text field on a webpage
// where the user can enter a mix of comma delimited,
// white space delimited and line delimited.
// 
// BUT you want the computer to read it as a flat list

var str = "1,2\n3 4";

str.replace(/,\W/g, ' ')
            .replace(/,/g, ' ')
            .replace(/\n/g, ' ')
            .replace(/\W+/g, ' ').split(' ');

// str.should.be(["1", "2", "3", "4"])