获取日期/时间/星期

Posted 2021-07-25 web半晨

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

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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());

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3、演示

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