timer for profiling

timer

var timer = {
    start: function (s) {
        this.stop();
        this.name = s;
        this.startts = Date.now();
    },

    stop: function () {
        if (!this.name) return;
        this.endts = Date.now();
        this.diff = (this.endts - this.startts) / 1000;
        this.print();
        this.name = '';
    },

    print: function () {
        log(this.name + ' duration: ' + this.diff);
    }
};

timer.start('some process');
timer.stop()