事件监听方法中滑动事件未触发

[qq_33666419]

window.addEventListener('scroll', updateSidebar);
window.addEventListener('resize', updateSidebar);
function updateSidebar() {
console.log("aaa");
var doc = document.documentElement;
var top = doc && doc.scrollTop || document.body.scrollTop;
var conOffsetTop = document.querySelector('.list-nav').offsetTop;
if(top>=conOffsetTop+24){
sectionContainer.classList.add('scrollbar');
}else{
sectionContainer.classList.remove('scrollbar');
}
var allHeaders = document.querySelectorAll('.product-modular');
if (animating || !allHeaders) return;
var last;
for (var i = 0; i < allHeaders.length; i++) {
var link = allHeaders[i];
if (link.offsetTop > top+300) {
if (!last) last = link;
break
} else {
last = link
}
}
if (last)
setActive(last.id)
}
代码结构

[业余草]

$(document).ready(function(){
window.addEventListener('scroll', updateSidebar);
    window.addEventListener('resize', updateSidebar);
    function updateSidebar() {
        console.log("aaa");
        var doc = document.documentElement;
        var top = doc && doc.scrollTop || document.body.scrollTop;
        var conOffsetTop = document.querySelector('.list-nav').offsetTop;
        if(top>=conOffsetTop+24){
            sectionContainer.classList.add('scrollbar');
        }else{
            sectionContainer.classList.remove('scrollbar');
        }
        var allHeaders = document.querySelectorAll('.product-modular');
        if (animating || !allHeaders) return;
        var last;
        for (var i = 0; i < allHeaders.length; i++) {
            var link = allHeaders[i];
            if (link.offsetTop > top+300) {
                if (!last) last = link;
                break
            } else {
                last = link
            }
        }
        if (last)
            setActive(last.id)
    }
});

把这段代码这样使用试一试。