Function windowScroll

Autopage.user.js:2938–2958

(fn1)

    }
    // 滚动条事件
    function windowScroll(fn1) {
        var beforeScrollTop = document.documentElement.scrollTop || document.body.scrollTop,
            fn = fn1 || function () {};
        setTimeout(function () { // 延时 1 秒执行，避免刚载入到页面就触发翻页事件

            // 避免网页内容太少，高度撑不起来，不显示滚动条而无法触发翻页事件
            let scrollTop = document.documentElement.scrollTop || window.pageYOffset || document.body.scrollTop,
                scrollHeight = window.innerHeight || document.documentElement.clientHeight
            if (scrollTop === 0 && document.documentElement.scrollHeight === scrollHeight) {
                insStyle(`html, body {min-height: ${document.documentElement.scrollHeight+10}px;}`)
            }

            window.addEventListener('scroll', function (e) {
                var afterScrollTop = document.documentElement.scrollTop || document.body.scrollTop,
                    delta = afterScrollTop - beforeScrollTop;
                if (delta == 0) return false;
                fn(delta > 0 ? 'down' : 'up', e);
                beforeScrollTop = afterScrollTop;
            }, false);
        }, 1000)
    }
    // 自定义 urlchange 事件（用来监听 URL 变化）
    function addUrlChangeEvent() {
        history.pushState = ( f => function pushState(){