const common = {
	a: 123,
	//简单时间格式化
	//使用方法 供新手参考 :
	// 在vue文件中 import { dateFormat } from '@/js_sdk/common.js'
	//let date = new Date();
	// dateFormat("YYYY-mm-dd HH:mm",date)
	fmt: (fmt, date) => {
		let ret;
		const opt = {
			"Y+": date.getFullYear().toString(), // 年
			"m+": (date.getMonth() + 1).toString(), // 月
			"d+": date.getDate().toString(), // 日
			"H+": date.getHours().toString(), // 时
			"M+": date.getMinutes().toString(), // 分
			"S+": date.getSeconds().toString() // 秒
			// 有其他格式化字符需求可以继续添加，必须转化成字符串
		};
		for (let k in opt) {
			ret = new RegExp("(" + k + ")").exec(fmt);
			if (ret) {
				fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
			};
		};
		return fmt;
	},
	//datetime 格式为2019-11-22 12:23:59样式
	timeago: (datetime) => { //dateTimeStamp是一个时间毫秒，注意时间戳是秒的形式，在这个毫秒的基础上除以1000，就是十位数的时间戳。13位数的都是时间毫秒。
		var dateTimeStamp = new Date(datetime.replace(/ /, 'T')).getTime() - 8 * 60 * 60 * 1000; //这里要减去中国的时区8小时
		var minute = 1000 * 60; //把分，时，天，周，半个月，一个月用毫秒表示
		var hour = minute * 60;
		var day = hour * 24;
		var week = day * 7;
		var halfamonth = day * 15;
		var month = day * 30;
		var now = new Date().getTime(); //获取当前时间毫秒
		var diffValue = now - dateTimeStamp; //时间差

		if (diffValue < 0) {
			console.log("diffValue<0", datetime, dateTimeStamp, now, diffValue);
			return '刚刚';
		}
		var minC = diffValue / minute; //计算时间差的分，时，天，周，月
		var hourC = diffValue / hour;
		var dayC = diffValue / day;
		var weekC = diffValue / week;
		var monthC = diffValue / month;
		var result = "2";
		if (monthC >= 1 && monthC <= 3) {
			result = " " + parseInt(monthC) + "月前"
		} else if (weekC >= 1 && weekC <= 3) {
			result = " " + parseInt(weekC) + "周前"
		} else if (dayC >= 1 && dayC <= 6) {
			result = " " + parseInt(dayC) + "天前"
		} else if (hourC >= 1 && hourC <= 23) {
			result = " " + parseInt(hourC) + "小时前"
		} else if (minC >= 1 && minC <= 59) {
			result = " " + parseInt(minC) + "分钟前"
		} else if (diffValue >= 0 && diffValue <= minute) {
			result = "刚刚"
		} else {
			var datetime = new Date();
			datetime.setTime(dateTimeStamp);
			var Nyear = datetime.getFullYear(); {}
			var Nmonth = datetime.getMonth() + 1 < 10 ? "0" + (datetime.getMonth() + 1) : datetime.getMonth() + 1;
			var Ndate = datetime.getDate() < 10 ? "0" + datetime.getDate() : datetime.getDate();
			var Nhour = datetime.getHours() < 10 ? "0" + datetime.getHours() : datetime.getHours();
			var Nminute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
			var Nsecond = datetime.getSeconds() < 10 ? "0" + datetime.getSeconds() : datetime.getSeconds();
			result = Nyear + "-" + Nmonth + "-" + Ndate
		}
		return result;
	},
}
export default common