forEachDealyed.js

var forEachDelayed = function recur (array, fn, delay, ix) {
    ix = (typeof ix === "number") ? ix : 0;
    fn(array[ix], ix, array);
    if (ix === array.length - 1) { return; }
    setTimeout(function () {
        recur(array, fn, delay, ix + 1);
    }, delay);
};