var count__scrolled = 0; (function ($) { Number.prototype.format = function (n) { var r = new RegExp("\\d(?=(\\d{3})+" + (n > 0 ? "\\." : "$") + ")", "g"); return this.toFixed(Math.max(0, Math.floor(n))).replace(r, "$&,"); }; $.extend($.expr[":"], { inview: function (elem) { var t = $(elem); var offset = t.offset(); var win = $(window); var winST = win.scrollTop(); var elHeight = t.outerHeight(true); if ( offset.top > winST - elHeight && offset.top < winST + elHeight + win.height() ) { return true; } return false; }, }); $(window).scroll(function () { if ($(".count").is(":inview")) { if (!count__scrolled) { $(".count").each(function () { $(this) .prop("counter", 0) .animate( { counter: $(this).text().replace(",", ""), }, { duration: 5000, // easing: "easeOut", step: function (step) { $(this).text("" + step.format()); }, } ); }); count__scrolled = 1; } } }); })(jQuery);