npm install moment -- save

import moment from 'moment'

let startDate = moment().subtract(30, "days").format('YYYY-MM-DD')
let endDate =  moment().format('YYYY-MM-DD')

//獲取當(dāng)前時(shí)間
var now = moment().toDate();//Mon Jul 06 2020 13:50:51 GMT+0800 (中國標(biāo)準(zhǔn)時(shí)間)
console.log(now)
//格式化當(dāng)前時(shí)間
now = moment().format('YYYY-MM-DD');//2020-07-06
console.log(now);
//其它幾種格式化方法
now = moment().format('L') // 10/22/2016?
console.log(now);
now = moment().format('LL') // October 22, 2016
console.log(now);
//格式化當(dāng)前時(shí)間
now = moment().format('YYYY-MM-DD:HH:MM:SS');
console.log(now);
//獲取這個(gè)月初時(shí)間
let startMonth = moment().startOf('month').toDate();
console.log(startMonth);
//獲取今天開始的時(shí)間
let dayOfStart = moment().startOf('day').toDate();
console.log(dayOfStart);
//獲取今天結(jié)束的時(shí)間
let dayOfEnd = moment().endOf('day').toDate();
console.log(dayOfEnd);
//獲?。玭小時(shí)
let lateHour = moment().add(2,'hour').toDate();
console.log(lateHour);
//獲取＋n小時(shí)
console.log('//獲取-n小時(shí)')
let beforeHour = moment().subtract(2,'hour').toDate();
console.log(beforeHour);
//獲?。玭天
let lateDay = moment().add(+5,'day').toDate();
console.log(lateDay);
//獲取-n天
let beforeDay = moment().add(-5,'day').toDate();
console.log(beforeDay);
//也可以表示為
beforeDay = moment().subtract(5,'day').toDate();
console.log(beforeDay);
console.log('//獲?。玭月')
let lateMonth = moment().add(2,'month').toDate();
console.log(lateHour);
//獲取＋n月
let beforeMonth = moment().subtract(2,'month').toDate();
console.log(lateHour);
//獲取星期
let week = moment().format('dddd');
console.log(week);
//獲取到現(xiàn)在的年限 如果不滿一年顯示出具體幾個(gè)月
let years = moment('2020-12-31').fromNow();
console.log(years);