103 lines
3.6 KiB
JavaScript
103 lines
3.6 KiB
JavaScript
const getDateFn ={
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//1、 得到今天、昨天、明天日期
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//dates为数字类型，0代表今日,-1代表昨日，1代表明日，返回yyyy-mm-dd格式字符串，dates不传默认代表今日。
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getDate(dates) {
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var dd = new Date();
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var n = dates || 0;
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dd.setDate(dd.getDate() + n);
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var y = dd.getFullYear();
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var m = dd.getMonth() + 1;
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var d = dd.getDate();
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m = m < 10 ? "0" + m: m;
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d = d < 10 ? "0" + d: d;
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var day = y + "-" + m + "-" + d;
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return day;
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},
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//2、得到本周、上周、下周的起始、结束日期
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//type为字符串类型，有两种选择，"s"代表开始,"e"代表结束，dates为数字类型，不传或0代表本周，-1代表上
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getMonday(type, dates) {
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var now = new Date();
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var nowTime = now.getTime();
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var day = now.getDay();
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var longTime = 24 * 60 * 60 * 1000;
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var n = longTime * 7 * (dates || 0);
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if (type == "s") {
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var dd = nowTime - (day - 1) * longTime + n;
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};
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if (type == "e") {
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var dd = nowTime + (7 - day) * longTime + n;
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};
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dd = new Date(dd);
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var y = dd.getFullYear();
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var m = dd.getMonth() + 1;
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var d = dd.getDate();
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m = m < 10 ? "0" + m: m;
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d = d < 10 ? "0" + d: d;
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var day = y + "-" + m + "-" + d;
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return day;
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},
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//3、得到本月、上月、下月的起始、结束日期
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//type为字符串类型，有两种选择，"s"代表开始,"e"代表结束，months为数字类型，0代表本月，-1代表上月，1代表下月
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getMonth(type, months) {
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var d = new Date();
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var year = d.getFullYear();
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var month = d.getMonth() + 1;
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if (Math.abs(months) > 12) {
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months = months % 12;
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};
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if (months != 0) {
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if (month + months > 12) {
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year++;
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month = (month + months) % 12;
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} else if (month + months < 1) {
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year--;
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month = 12 + month + months;
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} else {
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month = month + months;
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};
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};
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month = month < 10 ? "0" + month: month;
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var date = d.getDate();
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var firstday = year + "-" + month + "-" + "01";
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var lastday = "";
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if (month == "01" || month == "03" || month == "05" || month == "07" || month == "08" || month == "10" || month == "12") {
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lastday = year + "-" + month + "-" + 31;
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} else if (month == "02") {
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if ((year % 4 == 0 && year % 100 != 0) || (year % 100 == 0 && year % 400 == 0)) {
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lastday = year + "-" + month + "-" + 29;
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} else {
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lastday = year + "-" + month + "-" + 28;
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};
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} else {
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lastday = year + "-" + month + "-" + 30;
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};
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var day = "";
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if (type == "s") {
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day = firstday;
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} else {
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day = lastday;
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};
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return day;
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},
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//4、得到今年、去年、明年的开始、结束日期
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//type为字符串类型，有两种选择，"s"代表开始,"e"代表结束，dates为数字类型，不传或0代表今年，-1代表去年，1代表明年
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getYear(type, dates) {
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var dd = new Date();
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var n = dates || 0;
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var year = dd.getFullYear() + Number(n);
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if (type == "s") {
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var day = year + "-01-01";
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};
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if (type == "e") {
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var day = year + "-12-31";
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};
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if (!type) {
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var day = year + "-01-01/" + year + "-12-31";
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};
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return day;
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},
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}
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export default getDateFn;
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