比较javascript中的时间

const now = new Date();

const year = now.getFullYear();
const month = now.getMonth() + 1;
const day = now.getDate();
const hours = now.getHours();
const minutes = now.getMinutes();
const seconds = now.getSeconds();

const date1 = new Date('2022-01-01');
const date2 = new Date('2022-01-02');

if (date1< date2) {
  console.log('date1 is earlier than date2');
} else {
  console.log('date1 is later than or equal to date2');
}

const timestamp1 = new Date('2022-01-01').getTime();
const timestamp2 = new Date('2022-01-02').getTime();

if (timestamp1< timestamp2) {
  console.log('timestamp1 is earlier than timestamp2');
} else {
  console.log('timestamp1 is later than or equal to timestamp2');
}

const moment = require('moment');

const date1 = moment('2022-01-01');
const date2 = moment('2022-01-02');

if (date1.isBefore(date2)) {
  console.log('date1 is earlier than date2');
} else {
  console.log('date1 is later than or equal to date2');
}