JavaScript: Interval Method

Interval Method

function Interval (fn, time)
{
    var timer = false;

    this.start = function () {
        if (!this.isRunning()) {
            timer = setInterval(fn, time);
        }
    };

    this.stop = function () {
        clearInterval(timer);
        timer = false;
    };

    this.isRunning = function () {
        return timer !== false;
    };

    // var blaInterval = new Interval(functionName, time);
    // blaInterval.start();
    // blaInterval.stop();
    // if (blaInterval.isRunning())
}