我正在尝试创建拖放,并且希望滚动窗口,以防我开始拖动并到达页面的顶部/底部,直到走出顶部/底部“区域”为止。到目前为止,我所写的作品以不同的方式工作,我无法找到一种使之按我想要的方式工作的方法。 使用香草JS有什么方法吗?
let mouseDown = true;
function mousedown() {
mouseDown = true;
}
function mouseup() {
mouseDown = false;
}
if (!document.querySelector(".arrow-timeline")) {
this.element.addEventListener('mousemove', function() {
let x, y;
function handleMouse(e) {
// Verify that x and y already have some value
if (x && y && mouseDown) {
// Scroll window by difference between current and previous positions
window.scrollBy(e.clientX - x, e.clientY - y);
}
// Store current position
x = e.clientX;
y = e.clientY;
}
// Assign handleMouse to mouse movement events
document.onmousedown = mousedown;
document.onmousemove = handleMouse;
document.onmouseup = mouseup;
})
}