stagas

// typeof alternative

var check = function() {
  var args = Array.prototype.slice.call(arguments)
    , o = args[0]
    , a = args.slice(1)
  
  if (typeof o !== 'undefined' && (typeof o[a[0]] !== 'undefined') || !a.length && typeof o !== 'undefined')
    if (a.length > 1) { 
      b = o[a[0]]