js获取时间秒数

const now = new Date();
const seconds = now.getSeconds();
console.log("当前时间的秒数是：" + seconds);

const now = new Date();
const totalSeconds = Math.floor(now.getTime() / 1000);
console.log("自1970年1月1日以来的总秒数是：" + totalSeconds);

function formatTime(date) {
    let hours = date.getHours();
    let minutes = date.getMinutes();
    let seconds = date.getSeconds();

    // 补零操作
    hours = hours < 10 ? '0' + hours : hours;
    minutes = minutes < 10 ? '0' + minutes : minutes;
    seconds = seconds < 10 ? '0' + seconds : seconds;

    return `${hours}:${minutes}:${seconds}`;
}

const now = new Date();
console.log("当前时间是：" + formatTime(now));