ES6 Destructuring Assignment

This works fine in the latest FF, others are catching up!

var [a,b] = [1,2]

[a,b] = [b,a]  // Swap like the snake! :)

// a-> 2 and b -> 2 

function giveMe(){
   return [1,2,3];
}

var [a, ,b] = giveMe();

// a -> 1 and b -> 3 !