var answerTimer = {
    this: answerTimer,
    timerAnswer: -1,
    answerTimerId: null,
    timer: function () {
        ++this.timerAnswer;
        this.toPrint();
        this.answerTimerId = setTimeout(this.timer, 1000);
    },
    reset: function () {
        this.timerAnswer = 0;
    },
    stop: function () {
        this.reset();
        clearTimeout(this.answerTimerId);
    },
    toPrint: function () {
        document.getElementById("answerTimer").innerHTML = "last answer: " + this.timerAnswer + " sec";
    },
};

setTimeout(this.timer.bind(this), 1000);

<div id="timer"></div>
 <script>
 var answerTimer = {
    timerAnswer: 0,
    answerTimerId: null,
    timer: function () {
        this.toPrint();
        ++this.timerAnswer;
        var self = this;
        this.answerTimerId = setTimeout(function() {
        self.timer()
}, 1000);
    },
    reset: function () {
        this.timerAnswer = 0;
    },
    stop: function () {
        this.reset();
        clearTimeout(this.answerTimerId);
    },
    toPrint: function () {
        document.getElementById("timer").innerHTML = "last answer: " + this.timerAnswer + " sec";
    }
};
  answerTimer.timer();
  setTimeout(function() {
        answerTimer.stop()
}, 5054);

  </script>

(function(window) {
    var setTimeout = window.setTimeout;
    window.setTimeout = function(callback, delay, context) {
         setTimeout(callback.bind(context), delay);
    };
})(window);
/***********************/



var obj = {
    fn: function() {
        alert(this.foo);
    },
    foo: 'bar'
};

setTimeout(obj.fn, 1000, obj);

function Timer(selector) {
  this.id = null;
  this.element = document.querySelector(selector);
  this.tick = this.tick.bind(this);
  this.reset();
}

Timer.prototype.start = function() {
  this.reset();
  this.id = setTimeout(this.tick, 1000);
};
Timer.prototype.tick = function() {
  this.print();
};
Timer.prototype.reset = function () {
  this.timestamp = Date.now();
};
Timer.prototype.stop = function () {
  this.reset();
  clearTimeout(this.this.id);
};
Timer.prototype.print = function () {
  var diff = Date.now() - this.timestamp; // ms
  var seconds = Math.ceil(diff / 1000);
  this.element.innerHTML = "last answer: " + seconds + " sec";
};

// usage

var timer = new Timer("#answerTimer");
timer.start();