利用 Javascript Date实例来获取，现在、本周、本月、本日的时间格式

最新推荐文章于 2024-10-22 08:53:18 发布

原创最新推荐文章于 2024-10-22 08:53:18 发布 · 340 阅读

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#javascript

本文介绍了一组JavaScript函数，用于获取当前日期、本周及本月的日期格式化字符串。包括了不同格式的需求如仅日期、仅时间及日期时间组合。

// 获取现在日期格式
window.getNowFormatDate = function (format, seperator1) {
	format = format || 'date'
	seperator1 = seperator1 || '-';

	let date = new Date(),
		year = date.getFullYear(),
		month = date.getMonth() + 1,
		strDate = date.getDate();

	if (month >= 1 && month <= 9) {
		month = "0" + month;
	}
	if (strDate >= 0 && strDate <= 9) {
		strDate = "0" + strDate;
	}
	var currentdate = year + seperator1 + month + seperator1 + strDate;
	switch (format) {
		case 'time':
			return currentdate = date.getHours()+':'+date.getMinutes()+':'+date.getSeconds();
		break;
		case 'date':
			return currentdate;
		break;
		case 'datetime':
			return currentdate += ' '+date.getHours()+':'+date.getMinutes()+':'+date.getSeconds()
		break;
	}
}

// 获取今日本周本月日期格式
window.getTimeFormatDate = function (category,format) {
	format = format || 'date'
	let date = new Date(), startTime = '', endTime = '', year = date.getFullYear(), month = date.getMonth()+1, today = date.getDate();

	switch (category) {
		case 'today':
			// 本周一的日期
			startTime = year + '-' + month + '-' + today;
			// 本周日的日期
			endTime = year + '-' + month + '-' + today;
			break;
		case 'week':
		// 本周日的日期
			let nowDayOfWeek = date.getDay() - 1 ,weekEndDate = new Date(year,date.getMonth(),today + (6 - nowDayOfWeek))
				,myyear = weekEndDate.getFullYear(),mymonth = weekEndDate.getMonth() + 1,myweekday = weekEndDate.getDate();
			if (mymonth < 10) {
				mymonth = "0" + mymonth;
			}
			if (myweekday < 10) {
				myweekday = "0" + myweekday;
			}
			endTime  = myyear + "-" + mymonth + "-" + myweekday;

			date.setDate(date.getDate() - date.getDay() + 1);
			startTime = year + '-' + month + '-' + date.getDate();
			break;
		case 'month':
			startTime = new Date(year, month, 1)
			endTime = new Date(year, month + 1, 0)
			// 本月第一天
			startTime = year + '-' + month + '-' + startTime.getDate();
			// 本月最后一天
			endTime = year + '-' + month + '-' + endTime.getDate();
			break;
	}

	switch (format) {
		case 'date':
			return startTime + ' - ' + endTime;
		case 'datetime':
			return startTime  + ' 00:00:00' + ' - ' + endTime + ' 23:59:59';
	}
}