/**
 * Usage:
 *     delayedExec(function(value) {console.log(value);}, 500, val);
 * @param  {Function} fn    [description]
 * @param  {[type]}   delay [description]
 * @return {[type]}         [description]
 */
function delayedExec(fn, delay) {
    var args = Array.prototype.slice.call(arguments).slice(2);
    clear(fn);
    delayedExec[fn] = setTimeout(function() {
        fn.apply(null, args);
        clear(fn);
    }, delay, args);

    function clear(fn) {
        if(delayedExec[fn]) clearTimeout(delayedExec[fn]);
    }
}