我尝试使用鼠标事件使我的图像幻灯片可以抓取，但我的网页上出现了错误。我怎么解决这个问题
我的 javascript 代码在这里;
var slider = document.querySelector('card-slider-wrapper');
let isDown = false;
let startX;
let scrollLeft;
slider.addEventListener('mousedown', (e) => {
isDown = true;
slider.classList.add('active');
startX = e.pageX - slider.offsetLeft;
scrollLeft = slider.scrollLeft;
console.log(startX);
});
slider.addEventListener('mouseleave', () => {
isDown = false;
slider.classList.remove('active');
});
slider.addEventListener('mouseup', () => {
isDown = false;
slider.classList.add('active');
});
slider.addEventListener('mousemove', (e) => {
if (!isDown) return;
e.preventDefault();
const x = e.pageX - slider.offsetLeft;
const walk = (x - startX) * 3;
slider.scrollLeft = scrollLeft - walk;
});
1 回答
缺少类或 ID 标识符，
应该是
要么