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147 lines
3.0 KiB
JavaScript
147 lines
3.0 KiB
JavaScript
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const oneMinute = 1000 * 60; // 一分钟的毫秒数
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const oneHour = oneMinute * 60; // 一小时的毫秒数
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const oneDay = oneHour * 24; // 一天的毫秒数
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const oneWeek = oneDay * 7; // 一星期的毫秒数
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const oneMonth = oneDay * 30; // 一个月的毫秒数
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/**
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* 按天数减少
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*
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* @param days 要减少的天数
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*/
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Date.prototype.minusDays = function (days) {
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return this.minusMillis(oneDay * days);
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};
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/**
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* 按天数增加
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*
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* @param days 要增加的天数
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*/
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Date.prototype.plusDays = function (days) {
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return this.plusMillis(oneDay * days);
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};
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/**
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* 按小时减少
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*
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* @param hours 要减少的小时数
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*/
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Date.prototype.minusHours = function (hours) {
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return this.minusMillis(oneHour * hours);
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};
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/**
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* 按小时增加
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*
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* @param hours 要增加的小时数
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*/
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Date.prototype.plusHours = function (hours) {
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return this.plusMillis(oneHour * hours);
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};
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/**
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* 按分钟减少
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*
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* @param minutes 要减少的分钟数
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*/
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Date.prototype.minusMinutes = function (minutes) {
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return this.minusMillis(oneMinute * minutes);
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};
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/**
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* 按分钟增加
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*
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* @param minutes 要增加的分钟数
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*/
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Date.prototype.plusMinutes = function (minutes) {
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return this.plusMillis(oneMinute * minutes);
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};
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/**
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* 按毫秒减少
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*
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* @param millis 要减少的毫秒数
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*/
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Date.prototype.minusMillis = function(millis) {
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let time = this.getTime() - millis;
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let newDate = new Date();
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newDate.setTime(time);
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return newDate;
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};
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/**
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* 按毫秒增加
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*
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* @param millis 要增加的毫秒数
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*/
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Date.prototype.plusMillis = function(millis) {
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let time = this.getTime() + millis;
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let newDate = new Date();
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newDate.setTime(time);
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return newDate;
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};
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/**
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* 设置时间为当天的 00:00:00.000
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*/
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Date.prototype.setMinTime = function () {
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this.setHours(0);
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this.setMinutes(0);
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this.setSeconds(0);
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this.setMilliseconds(0);
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return this;
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};
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/**
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* 设置时间为当天的 23:59:59.999
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*/
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Date.prototype.setMaxTime = function () {
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this.setHours(23);
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this.setMinutes(59);
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this.setSeconds(59);
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this.setMilliseconds(999);
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return this;
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};
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/**
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* 格式化日期
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*/
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Date.prototype.formatDate = function () {
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return this.getFullYear() + "-" + addZero(this.getMonth() + 1) + "-" + addZero(this.getDate());
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};
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/**
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* 格式化时间
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*/
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Date.prototype.formatTime = function () {
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return addZero(this.getHours()) + ":" + addZero(this.getMinutes()) + ":" + addZero(this.getSeconds());
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};
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/**
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* 格式化日期加时间
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*
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* @param split 日期和时间之间的分隔符,默认是一个空格
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*/
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Date.prototype.formatDateTime = function (split = ' ') {
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return this.formatDate() + split + this.formatTime();
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};
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class DateUtil {
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// 字符串转 Date 对象
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static parseDate(str) {
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return new Date(str.replace(/-/g, '/'));
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}
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static formatMillis(millis) {
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return moment(millis).format('YYYY-M-D H:m:s')
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}
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static firstDayOfMonth() {
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const date = new Date();
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date.setDate(1);
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date.setMinTime();
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return date;
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}
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}
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