JavaScript format seconds into readable form

Format 33546001 seconds into a readable format of 1 year, 23 days, 6 hours, 20 minutes and 1 second.

 function secondsToString(seconds) {
    if (seconds === 0) return '0'
    let y = Math.floor(seconds / 31536000);
    let d = Math.floor((seconds % 31536000) / 86400);
    let h = Math.floor(((seconds % 31536000) % 86400) / 3600);
    let m = Math.floor((((seconds % 31536000) % 86400) % 3600) / 60);
    let s = (((seconds % 31536000) % 86400) % 3600) % 60;

    let result = '';
    if (y) result += y + "年";
    if (d) result += d + "天";
    if (h) result += h + "小时";
    if (m) result += m + "分";
    if (s) result += s + "秒";

    return result;
} 
const b = secondsToString(33546001)
console.log('b:', b)
// 1年23天6小时20分1秒

If the hour, minute and second are less than 10, you need to add 0, which is as follows:

 function secondsToString(seconds) {
    if (seconds === 0) return '0'
    let y = Math.floor(seconds / 31536000);
    let d = Math.floor((seconds % 31536000) / 86400);
    let h = Math.floor(((seconds % 31536000) % 86400) / 3600);
    let m = Math.floor((((seconds % 31536000) % 86400) % 3600) / 60);
    let s = (((seconds % 31536000) % 86400) % 3600) % 60;

    let result = '';
    if (y) result += y + "年";
    if (d) result += d + "天";
    if (h) {
        h<10?result += '0'+h + "小时":result += h + "小时";
    }
    if (m) {
        m<10?result += '0'+m + "分":result += m + "分";
    }
    if (s) {
        s<10?result += '0'+s + "秒":result += s + "秒";
    }

    return result;
} 
const a = secondsToString(33546001)
console.log('a:', a)
// a: 1年23天06小时20分01秒

Sometimes we also need to format a point in time in the past, how long has passed since now, as follows:

Convert the posting time of the article or comment to, just, 10 minutes ago....

You can refer to the following article

format release time