[javascript] Convert seconds to a human readable format

convert_seconds.js

const sec= 3333

function convert_seconds(sec) {
    const divmod = (x, y) => [Math.floor(x / y), x % y];
    var d,h,m,s;
    var [m, s] = divmod(sec, 60);
    var [h, m] = divmod(m, 60);
    var [d, h] = divmod(h, 24);
    return `${d}d,${h}h,${m}m,${s}s`;
}
console.log(convert_seconds(sec))