js日期截取

let now = new Date();

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

console.log(`当前日期和时间: ${year}-${month}-${day} ${hours}:${minutes}:${seconds}`);

function formatDate(date) {
    let year = date.getFullYear();
    let month = ('0' + (date.getMonth() + 1)).slice(-2); // 补零操作
    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 nowFormatted = formatDate(new Date());
console.log(nowFormatted);

let month = now.getMonth() + 1;

let month = ('0' + (date.getMonth() + 1)).slice(-2);