scrolltop js

let scrollTopValue = document.documentElement.scrollTop || document.body.scrollTop;
console.log(scrollTopValue);

document.documentElement.scrollTop = 100; // 滚动到距离顶部100px的位置

function scrollToTop() {
    const c = document.documentElement.scrollTop || document.body.scrollTop;
    if (c > 0) {
        window.requestAnimationFrame(scrollToTop);
        window.scrollTo(0, c - c / 8);
    }
}

function throttle(func, wait) {
    let timeout = null;
    return function() {
        if (!timeout) {
            timeout = setTimeout(() => {
                func.apply(this, arguments);
                timeout = null;
            }, wait);
        }
    };
}

window.addEventListener('scroll', throttle(() => {
    console.log('Scroll event throttled');
}, 200));