format javascript date to format "YYYY-mm-dd HH:MM:SS"

js-date-format.js

var d = new Date();
d = new Date(d.getTime() - 3000000);
var date_format_str = d.getFullYear().toString()+"-"+((d.getMonth()+1).toString().length==2?(d.getMonth()+1).toString():"0"+(d.getMonth()+1).toString())+"-"+(d.getDate().toString().length==2?d.getDate().toString():"0"+d.getDate().toString())+" "+(d.getHours().toString().length==2?d.getHours().toString():"0"+d.getHours().toString())+":"+((parseInt(d.getMinutes()/5)*5).toString().length==2?(parseInt(d.getMinutes()/5)*5).toString():"0"+(parseInt(d.getMinutes()/5)*5).toString())+":00";
console.log(date_format_str);
//2015-03-31 13:35:00

const now = new Date()
const [date, time] = now.toISOString().substring(0, 19).split('T')
return \`${date} ${time}\`

import {
    f_b_daylight_saving_time,
    f_s_isotimezone__from_s_timezone,
    f_s_ymd__from_n_ts_ms_utc,
    f_s_dmy__from_n_ts_ms_utc,
    f_s_hms__from_n_ts_ms_utc,
    f_s_ymd_hms__from_n_ts_ms_utc,
    f_n_ms_offset_from_s_timezone_n_ts_ms, 
    f_o_ts_range__day__from_n_ts_ms_utc,
    f_o_ts_range__week__from_n_ts_ms_utc,
    f_o_ts_range__month__from_n_ts_ms_utc,
    f_o_ts_range__year__from_n_ts_ms_utc,
    f_s_timestring_from_n_ms,
    f_measure_time,
    f_n_ts_ms__rounded_to
    }
    from "https://deno.land/x/date_functions@1.3/mod.js"

Or ...

const getUTCTimestamp = ()=> {
    const d = new Date().toISOString().split('T')
    const date = d[0];
    const time = d[1].split('.')[0];
    
    return `${date} ${time}`
}