js如何获取计算机当前时间

let now = new Date();
console.log(now); // 输出当前日期和时间

let now = new Date();
let year = now.getFullYear();
let month = now.getMonth() + 1; // 月份从0开始，所以需要加1
let day = now.getDate();
let hours = now.getHours();
let minutes = now.getMinutes();
let seconds = now.getSeconds();

console.log(`${year}-${month}-${day} ${hours}:${minutes}:${seconds}`);

let timestamp = Date.now(); // 获取当前时间的时间戳
console.log(timestamp);

let dateFromTimestamp = new Date(timestamp);
console.log(dateFromTimestamp);

let now = new Date();
let utcNow = new Date(now.getTime() + now.getTimezoneOffset() * 60000);
console.log(utcNow); // 输出UTC时间

function formatDate(date) {
    let year = date.getFullYear();
    let month = ('0' + (date.getMonth() + 1)).slice(-2);
    let day = ('0' + date.getDate()).slice(-2);
    let hours = ('0' + date.getHours()).slice(-2);
    let minutes = ('0' + date.getMinutes()).slice(-2);
    let seconds = ('0' + date.getSeconds()).slice(-2);

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

let now = new Date();
console.log(formatDate(now));