JS 获取当天零点时间戳

当天0点时间戳

new Date(new Date().toLocaleDateString()).getTime()

7天前

const start = new Date(new Date().toLocaleDateString());
start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
const t = start.getTime();
console.log(start)
console.log(t)