文档:JS日期对象
Date.prototype.Format = function (fmt) {
let o = {
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"H+": this.getHours(), //小时
"m+": this.getMinutes(), //分
"s+": this.getSeconds(), //秒
"q+": Math.floor((this.getMonth() + 3) / 3), //季度
"S": this.getMilliseconds() //毫秒
};
if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substring(4 - RegExp.$1.length));
for (let k in o) {
if (new RegExp("(" + k + ")").test(fmt)) {
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substring(("" + o[k]).length)));
}
}
return fmt;
}
/**
* @description: 日期格式转换
* @param {*}
* @return {*}
* @param {*} date new Date()参数:
* new Date();无
* new Date(value);Unix时间戳:1652054400000
* new Date(dateString);时间戳字符串:'2020-05-09'
* new Date(year, monthIndex [, day [, hours [, minutes [, seconds [, milliseconds]]]]]);分别提供日期与时间的每一个成员
* @param {*} type 日期格式(英文按示例用,区分字母大小写) e.g "yyyy年MM月dd日 HH:mm:ss"
*/
export const getFormatDate = (date, type) => {
let curDate = date || new Date()
let newDate = new Date(curDate).Format(type)
return newDate
}
/**
* @description: 获取n年前指定日期
* @param {*} n
* @return {*} Unix Time Stamp e.g: 1652054400000
*/
export const getYearAgoDate = (n = 0) => {
let curDate = new Date()
curDate.setFullYear(curDate.getFullYear() - n)
const ts = + curDate
return ts
}
/**
* @description: 获取n月前指定日期
* @param {*} n
* @return {*} Unix Time Stamp e.g: 1652054400000
*/
export const getMonthAgoDate = (n = 0) => {
let curDate = new Date()
curDate.setMonth(curDate.getMonth() - n)
const ts = + curDate
return ts
}
/**
* @description: 获取n天前指定日期
* @param {*} n
* @return {*} Unix Time Stamp e.g: 1652054400000
*/
export const getDayAgoDate = (n = 0) => {
let curDate = new Date();
let newDate = new Date(curDate - 1000 * 60 * 60 * 24 * n);
const ts = + newDate
return ts
}