Give heart beat capacity to a function, execute it at regular interval

HeartBeat

var Heart = function(pulse){
  
  return {
    id: null,
    periodical: function(beat){
      this.id = setInterval(pulse, beat);
      console.log('interval ' + this.id);
      return this;
    },
    stop: function(span){
      console.log('before timeout ' + this.id);
      setTimeout(
        (function(){
          console.log('timeout ' + this.id); 
           clearInterval(this.id); 
        }).bind(this), 
        span
      );
      return this;
    }
  };
  
};

var Body = function(heart) { 
  
  var message = 'message from inside';
  function pulse(){
    console.log(message);
  }
  
  return heart(pulse);
    
};
Body(Heart).periodical(1000).stop(3000);