var date = new Date();
date.setDate(date.getDate() + 10);
console.log(date.toString());
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.27.0/moment.js" defer></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.27.0/locale/ja.js" defer></script>
var m = moment();
var text = m.format('MM/DD(dddd)') + "\n";
結果例 :
12/17(月曜日)
次の日はこのように求めます
m.add(1, "day"); // 次の日
/**
* 今日の日付を求める
*/
function getNow() {
let nowdate = new Date();
let year = nowdate.getFullYear();
let mon = nowdate.getMonth() + 1;
let date = nowdate.getDate();
let hour = nowdate.getHours();
let min = nowdate.getMinutes();
let sec = nowdate.getSeconds();
if (mon < 10) {
mon = "0" + mon;
}
if (date < 10) {
date = "0" + date;
}
if (hour < 10) {
hour = "0" + hour;
}
if (min < 10) {
min = "0" + min;
}
if (sec < 10) {
sec = "0" + sec;
}
return `${year}/${mon}/${date} ${hour}:${min}:${sec}`;
}
var now_day = _get_now();
結果例
2018/12/17 15:30:45