chrome 区域外事件捕捉
在 chrome 浏览器中，由于 setcapture() 和 window.captureevents() 已被弃用，在进度条区域外拖动进度条时，将无法触发鼠标移动事件。以下代码通过监听 mousedown 事件来避免这种情况，并允许在进度条区域外继续触发鼠标移动事件：
const button = document.querySelector('button');
button?.addEventListener('mousedown', handleMoveStart);
let startPoint: { x: number; y: number } | undefined;
let originalOnSelectStart: Document['onselectstart'] = null;
function handleMoveStart(e: MouseEvent) {
e.stopPropagation();
if (e.ctrlKey || [1, 2].includes(e.button)) return;
window.getSelection()?.removeAllRanges();
e.stopImmediatePropagation();
window.addEventListener('mousemove', handleMoving);
window.addEventListener('mousedown', handleMoveEnd);
originalOnSelectStart = document.onselectstart;
document.onselectstart = () => false;
startPoint = { x: e.x, y: e.y };
}
function handleMoving(e: MouseEvent) {
if (!startPoint) return;
// DO Something
}
function handleMoveEnd(e: MouseEvent) {
window.removeEventListener('mousemove', handleMoving);
window.removeEventListener('mousedown', handleMoveEnd);
startPoint = undefined;
if (document.onselectstart !== originalOnSelectStart) {
document.onselectstart = originalOnSelectStart;
}
} 
