{{#if settings.showGoTop}}
(function(window) {
    function throttle(func, wait) {
        var lastCallTime = new Date().getTime();

        return function() {
            var time = new Date().getTime();
            if (lastCallTime + wait < time) {
                lastCallTime = time;
                func.apply(this, arguments);
            }
        };
    }

    function onScroll() {
        var goTop = document.getElementsByClassName('go-top')[0];
        if (goTop) {
            goTop.classList[
                window.scrollY > document.documentElement.clientHeight * {{settings.showGoTop}} * 0.01
                    ? 'add'
                    : 'remove'
            ]('go-top_show');
    
        }
    }

    window.addEventListener('scroll', throttle(onScroll, 50));
})(window);
{{/if}}

{{#if settings.script}}{{{settings.script}}}{{/if}}