获取日期/时间/星期

1、介绍

1 获取年 2 获取月 3 获取日 4 获取年月日 5 获取时 6 获取分 7 获取秒 8 获取时分秒 9 获取星期 10 获取年月日时分秒（yy-MM-dd hh:MM:ss） 不传默认返回 yy-MM-dd hh:MM:ss

2、代码

function getDateTimeWeek(key = 10) { key = Number(key); let dateTime = new Date(), year = dateTime.getFullYear(), month = dateTime.getMonth() + 1, day = dateTime.getDate(), hour = dateTime.getHours(), minute = dateTime.getMinutes(), second = dateTime.getSeconds(), weeks = dateTime.getDay(); month = month < 10 ? "0" + month : month; day = day < 10 ? "0" + day : day; hour = hour < 10 ? "0" + hour : hour; minute = minute < 10 ? "0" + minute : minute; second = second < 10 ? "0" + second : second; let result = null; switch (key) { case 1: result = `${year}`; break; case 2: result = `${month}`; break; case 3: result = `${day}`; break; case 4: result = `${year}-${month}-${day}`; break; case 5: result = `${hour}`; break; case 6: result = `${minute}`; break; case 7: result = `${second}`; break; case 8: result = `${hour}:${minute}:${second}`; break; case 9: result = `${weeks}`; break; case 10: result = `${year}-${month}-${day} ${hour}:${minute}:${second}`; break; default: console.log("出错啦！"); break; }; return result; }; console.log(getDateTimeWeek(10)); console.log(getDateTimeWeek()); 

3、演示