JS getdate for each day of the current month, JS getdate for all days of the week

Get the date of each day of the current month, get the date of each day of the current week

Calling code:

console.log('-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --', getNowM(), getWeekDay())
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Result: I am 2020-2-28 today

Encapsulation method:

function getDay(num, str) {
  var today = new Date(a);var nowTime = today.getTime();
  var ms = 24 * 3600 * 1000 * num;
  today.setTime(parseInt(nowTime + ms));
  var oYear = today.getFullYear();
  var oMoth = (today.getMonth() + 1).toString();
  if (oMoth.length <= 1) oMoth = '0' + oMoth;
  var oDay = today.getDate().toString();
  if (oDay.length <= 1) oDay = '0' + oDay;
  return oYear + str + oMoth + str + oDay;
}
// Format the date
function formatDate(date) {
  date = new Date(date);
  let myyear = date.getFullYear();
  let mymonth = date.getMonth() + 1;
  let myweekday = date.getDate();
  mymonth < 10 ? mymonth = "0" + mymonth : mymonth;
  myweekday < 10 ? myweekday = "0" + myweekday : myweekday;
  return `${myyear}-${mymonth}-${myweekday}`;
}
// Get the number of days in the current month
function mGetDate() {
  var date = new Date(a);var year = date.getFullYear();
  var month = date.getMonth() + 1;
  var d = new Date(year, month, 0);
  return d.getDate();
}
// Get the date of the week
function getWeekDay() {
  let dateString = formatDate(new Date());// The date of the day, e.g. 2020-2-28
  let presentDate = new Date(dateString);
  lettoday = presentDate.getDay() ! = =0 ? presentDate.getDay() : 7;
 
  return Array.from(new Array(7), function (val, index) {
    return formatDate(new Date(presentDate.getTime() - (today - index - 1) * 24 * 60 * 60 * 1000));
  });
}
// Get all the dates of the current month
function getNowM(e) {
  let now = new Date(a);let current_month_num = mGetDate();
  let current_month = [];
  for (let i = 1; i <= current_month_num; i++) {
    let day = now.setDate(i);
    let everyDay = formatDate(day);
    current_month.push(everyDay);
  }
  return current_month;
}
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