前端日期转换？

Question

怎么把日期转换成这种格式"2024-03-22T00:00:00+08:00"

Answer 1

function formatDate(date, timezoneOffset = '+08:00') {
const padZero = (num) => (num < 10 ? '0' + num : num);
const year = date.getFullYear();
const month = padZero(date.getMonth() + 1);
const day = padZero(date.getDate());
const hours = padZero(date.getHours());
const minutes = padZero(date.getMinutes());
const seconds = padZero(date.getSeconds());

return ${year}-${month}-${day}T${hours}:${minutes}:${seconds}${timezoneOffset};
}

const date = new Date('2024-03-22');
console.log(formatDate(date));

或者用moment.js
npm install moment

const moment = require('moment-timezone');

function formatDateWithMoment(date, timezone = 'Asia/Shanghai') {
return moment(date).tz(timezone).format('YYYY-MM-DD[T]HH:mm:ssZ');
}

const date = new Date('2024-03-22');
console.log(formatDateWithMoment(date));

Answer 2

function formatDateToISO(date, timeZone) {
    // 创建一个新的Date对象
    let d = new Date(date);

    // 获取本地时间字符串并格式化为ISO 8601格式
    let options = { timeZone: timeZone, hour12: false };
    let localDate = new Intl.DateTimeFormat('sv-SE', options).format(d);
    let localTime = new Intl.DateTimeFormat('sv-SE', { ...options, hour: '2-digit', minute: '2-digit', second: '2-digit' }).format(d);

    // 拼接日期和时间
    let localISOTime = `${localDate}T${localTime}`;

    // 获取时区偏移
    let offset = d.getTimezoneOffset();
    let sign = offset > 0 ? '-' : '+';
    offset = Math.abs(offset);
    let hours = String(Math.floor(offset / 60)).padStart(2, '0');
    let minutes = String(offset % 60).padStart(2, '0');

    return `${localISOTime}${sign}${hours}:${minutes}`;
}

// 示例使用
let date = new Date('2024-03-22T00:00:00');
console.log(formatDateToISO(date, 'Asia/Shanghai')); // 输出: 2024-03-22T00:00:00+08:00