gistfile1.js

function IntervalMonitor() {
        var intervals = [];

        this.start = function (callback, repeat) {
                var res = setInterval(callback, repeat);
                intervals.push(res);
                return res;
        }

        this.stop = function (item) {
                for (var i in intervals) {
                        if (intervals[i] === item) {
                                intervals.splice(i, 1);
                        }
                }
                return clearInterval(item);
        }

        this.stopAll = function () {
                intervals.forEach(function (i) {
                        clearInterval(i);
                });
                intervals = [];
        }
}

var monitor = new IntervalMonitor();
var sandbox = { setInterval: monitor.start, clearInterval: monitor.stop };