Scroll Percentage CustomGoal 50% and 75%

scrollPercentageCustomGoal.js

(function () {
    var isIntervals = setInterval(function () {

        // GLOBAL VARIABLES
        var jQuery = window.jQuery; // JQUERY
        window.optimizely = window.optimizely || []; // OPTIMIZELY

        if (jQuery !== undefined && window.optimizely !== undefined) {

            var scrollFifty = true;
            var scrollSeventyFive = true;
            var scrollNinty = true;

            // Create the scrollPercentage
            jQuery(window).bind('scroll', function () {
                window.scrollPercent = (jQuery(window).scrollTop() / (jQuery(document).height() - jQuery(window).height())) * 100;

                // Conditional code we'll use to fire events based on scrollPercentage.
                if (window.scrollPercent >= 50 && scrollFifty) {
                    //console.log("scroll50");
                    window.optimizely.push(["trackEvent", "scroll_depth_50"]);
                    scrollFifty = false;
                }

                if (window.scrollPercent >= 75 && scrollSeventyFive) {
                    //console.log("scroll75");
                    window.optimizely.push(["trackEvent", "scroll_depth_75"]);
                    scrollSeventyFive = false;
                }

            });
            clearInterval(isIntervals);
        }

    }, 25);

})();