Thought it would be a neat exercise to recreate the mIRC $gettok() function in javascript as I've seen it popup in several other languages. The only caveat I'm aware of is when passing multiple N parameters (eg: '2-6' or '2-'); it must be in string format. Otherwise javascript will interpret N and pass undesired results (eg: '-4'). If only passing one N parameter, integer use is recommended.

var s = 'this is sparta yo rawr meow woof moo', r;
r = gettok(s, '2-6', 32); // result: is sparta yo rawr meow
r = gettok(s, 2, 32); // result: is
r = gettok(s, '6-', 32); // result: meow woof moo

function gettok(s, n, c) {
  var c = String.fromCharCode(c), sa = s.split(c);
  if (!/-/.test(n)) {
    n = (n - 1);
    return sa[n] || NaN;
  } else {
    n = n.split('-'), o = [];
    var x = n[1] || s.length;
    for (var i = (n[0] - 1); i < x; i++) o.push(sa[i]);
    return (o.length > 0) ? o.join(c) : NaN;
  }
}