js阻止页面滚动

document.addEventListener('wheel', function(event) {
    event.preventDefault();
}, { passive: false });

document.addEventListener('touchmove', function(event) {
    event.preventDefault();
}, { passive: false });

document.addEventListener('keydown', function(event) {
    if (event.key === 'ArrowUp' || event.key === 'ArrowDown' || 
        event.key === 'PageUp' || event.key === 'PageDown' || 
        event.key === 'Space') {
        event.preventDefault();
    }
});

body.no-scroll {
    overflow: hidden;
}

function disableScroll() {
    document.body.classList.add('no-scroll');
}

function enableScroll() {
    document.body.classList.remove('no-scroll');
}

let scrollPosition = 0;

function disableScroll() {
    scrollPosition = window.pageYOffset;
    document.body.style.position = 'fixed';
    document.body.style.top = `-${scrollPosition}px`;
    document.body.style.width = '100%';
}

function enableScroll() {
    document.body.style.position = '';
    document.body.style.top = '';
    window.scrollTo(0, scrollPosition);
}