<div class="counter col_fourth">
     <h2 class="timer count-title" id="count-number" data-to="300" data-speed="1500"></h2>
     <p class="count-text ">小月博客</p>
 </div>

$.fn.countTo = function(a) {
     a = a || {};
     return $(this).each(function() {
         var c = $.extend({},
         $.fn.countTo.defaults, {
             from: $(this).data("from"),
             to: $(this).data("to"),
             speed: $(this).data("speed"),
             refreshInterval: $(this).data("refresh-interval"),
             decimals: $(this).data("decimals")
         }, a);
     var h = Math.ceil(c.speed / c.refreshInterval),
     i = (c.to - c.from) / h;
     var j = this,
     f = $(this),
     e = 0,
     g = c.from,
     d = f.data("countTo") || {};
     f.data("countTo", d);
     if (d.interval) {
         clearInterval(d.interval)
     }
     d.interval = setInterval(k, c.refreshInterval);
     b(g);
     function k() {
         g += i;
         e++;
         b(g);
         if (typeof(c.onUpdate) == "function") {
             c.onUpdate.call(j, g)
         }
         if (e >= h) {
             f.removeData("countTo");
             clearInterval(d.interval);
             g = c.to;
             if (typeof(c.onComplete) == "function") {
                 c.onComplete.call(j, g)
             }
         }
     }
     function b(m) {
         var l = c.formatter.call(j, m, c);
         f.html(l)
     }
 })
};
$.fn.countTo.defaults = {
     from: 0,
     to: 0,
     speed: 1000,
     refreshInterval: 100,
     decimals: 0,
     formatter: formatter,
     onUpdate: null,
     onComplete: null
};
function formatter(b, a) {
     return b.toFixed(2)
}
$("#count-number").data("countToOptions", {
     formatter: function(b, a) {
         return b.toFixed(2).replace(/\B(?=(?:\d{3})+(?!\d))/g, ",")
     }
});
$(".timer").each(count);
function count(a) {
     var b = $(this);
     a = $.extend({},
     a || {},
     b.data("countToOptions") || {});
     b.countTo(a)
};