smooth scroll to top

Question

I\'ve bean searching for this for a few hours now and I have no solution. I want a smooth scroll to the top of the page. I already have smooth scrolling to separate anchors

Answer 1

Came up with this solution:

function scrollToTop() {
let currentOffset = window.pageYOffset;
const arr = [];

for (let i = 100; i >= 0; i--) {
    arr.push(new Promise(res => {
            setTimeout(() => {
                    res(currentOffset * (i / 100));
                },
                2 * (100 - i))
        })
    );
}

arr.reduce((acc, curr, index, arr) => {
    return acc.then((res) => {
        if (typeof res === 'number')
            window.scrollTo(0, res)
        return curr
    })
}, Promise.resolve(currentOffset)).then(() => {
    window.scrollTo(0, 0)
})}