sample88.html

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/html">
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <div id="counter1"></div>
    <div id="counter2"></div>
    <script src="jquery-2.1.4.js"></script>
    <script>
        (function($){

            $.fn.count = function(opt) {

                var options = $.extend({},
                        $.fn.count.defaultOpts,
                        opt);

               return this.each(
                        function() {
                            var $this = $(this);
                            $this.text(options.startCount + '');

                            var myInterval = window.setInterval(function() {
                                var curCount = parseFloat($this.text());
                                curCount++;
                                $this.text(curCount + '');
                            }, 1000);
                        }
                );

            };

        })(jQuery);

        $.fn.count.defaultOpts = {
            startCount: 100
        };

        jQuery('#counter1, #counter2').count({ startCount: 150});
    </script>
</body>
</html>