Javascript Interval class

intervall-class.js

/**
 * A resumable interval timer.
 * Will call `callback` every `delay` milliseconds.
 * Use go() to start and stop() to quit triggering the callback.
 */
function Interval(callback,delay){
  this.go = function () {
    this._ref = window.setInterval(callback,delay);
    return this;
  }
  this.stop = function() {
    window.clearInterval(this._ref);
    return this;
  }
};

// Example:

var interval = new Interval(function(){
 if (!confirm("Keep on asking every 6 seconds?")) {
   interval.stop();
 }
},6000).go();