JS function to get nearest end of week date time as a YYY/MM/DD HH:ii:ss string

getEndOfWeek.js

/**
 * returns date-time of the nearest week end
 * as a string "YYYY/MM/DD HH:ii:ss"
 */
function getEndOfWeek() {  
  const D = new Date();
  D.setDate(D.getDate() - D.getDay() + (D.getDay() ? 7 : 0));
  D.setHours(23, 59 - D.getTimezoneOffset(), 59, 0);
  return D.toISOString().slice(0, 19).replace('T', ' ').replace(/-/g,'/');
}