Arrays iterieren mit JavaScript2

var animals = ['beaver','monkey','lion'];
 
// for loop #1
for(var i=0;i<animals.length;i++){
  console.log(animals[i]);
}
 
// for loop #2
for(var i in animals){
  console.log(animals[i]);
}
 
// foreach loop (does not work in IE8 and lower!)
animals.forEach(function(animal){
  console.log(animal);
});

// Perl-like syntax
[console.log(animal) for each (animal in animals)];
// Iterator
[console.log(animal) for ([i,animal] in Iterator(animals))];