explain-unicloud/utils/datetime.js

uniCloud云函数框架

/**
 * dateTime模块，主要作用为日期时间处理
 */

"use strict";

module.exports = class dateTime {
	
	static now(formatString, timezone) {
		let timestamp = new Date().getTime();
		if (formatString) {
			timestamp = dateTime.format(timestamp, formatString, timezone);
		}
		return timestamp;
	}
	
	static format(timestamp, formatString, timezone = 8) {
		var d = new Date(timestamp);
		let gmt = d.getTimezoneOffset(); // 本地时间和格林威治的时间差，单位为分钟
		d.setMinutes(d.getMinutes() + gmt); // 添补时间差至格林威治时间
		d.setHours(d.getHours() + timezone); // 加上时区
		var o = {
			"M+": d.getMonth() + 1, //月份
			"d+": d.getDate(), //日
			"H+": d.getHours(), //小时
			"m+": d.getMinutes(), //分
			"s+": d.getSeconds(), //秒
			"q+": Math.floor((d.getMonth() + 3) / 3) //季度
		};
		if (/(y+)/.test(formatString)) {
			formatString = formatString.replace(RegExp.$1, (d.getFullYear() + "").substr(4 - RegExp.$1.length));
		}
		for (var k in o) {
			if (new RegExp("(" + k + ")").test(formatString)) {
				formatString = formatString.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
			}
		}
		if(/(f+)/.test(formatString)) {
			formatString = formatString.replace(RegExp.$1, (d.getMilliseconds() + "").substr(3 - RegExp.$1.length));
		}
		return formatString;
	}
	
	static addYears(timestamp, value) {
		var date = new Date(timestamp);
		date.setFullYear(date.getFullYear() + value);
		return date.getTime();
	}
	
	static addMonths(timestamp, value) {
		var date = new Date(timestamp);
		date.setMonth(date.getMonth() + value);
		return date.getTime();
	}
	
	static addDays(timestamp, value) {
		var date = new Date(timestamp);
		date.setDate(date.getDate() + value);
		return date.getTime();
	}
	
	static addHours(timestamp, value) {
		var date = new Date(timestamp);
		date.setHours(date.getHours() + value);
		return date.getTime();
	}
	
	static addMinutes(timestamp, value) {
		var date = new Date(timestamp);
		date.setMinutes(date.getMinutes() + value);
		return date.getTime();
	}
	
	static addSeconds(timestamp, value) {
		var date = new Date(timestamp);
		date.setSeconds(date.getSeconds() + value);
		return date.getTime();
	}
	
	static addMilliseconds(timestamp, value) {
		var date = new Date(timestamp);
		date.setMilliseconds(date.getMilliseconds() + value);
		return date.getTime();
	}
	
}