asyncEach.js

$.fn.asyncEach = function(fn, maxDuration) {
    var maxDuration = typeof maxDuration === 'undefined' ? 100 : maxDuration,
        elems = Array.prototype.slice.apply(this),
        i = 0;
    var interval = setInterval(function() {
        var end = Date.now() + maxDuration;
        while (i < elems.length) {
            if (fn.apply(elems[i]) === false) {
                clearInterval(interval);
                return;
            }
            if (i++ < elems.length && Date.now() > end) {
                return;
            }
        }
        clearInterval(interval);
    }, 1);
}