let date = new Date();
let dateYear = date.getFullYear(); //获取年
let dateMonth = date.getMonth(); //获取月
let dateDate = date.getDate(); //获取当日
let dateDay = date.getDay(); //获取当日星期数
let dateHours = date.getHours(); //获取小时
let dateMinutes = date.getMinutes(); //获取分钟
let dateSeconds = date.getSeconds(); //获取秒
let dateMilliseconds = date.getMilliseconds(); //获取毫秒
