結論 let now = new Date (); // 常に現在時刻を入れておく為のオブジェクト function calc () { let now = new Date (); // 使い捨てにする計算用。必ず別に定義する。 let people = document.getElementById ("people").value; // 入力フォームのvalueを取得 let ...

php-js-dateformat is a lightweight and powerful JavaScript library that mimics PHP's date_format() function, enabling seamless date formatting with PHP-style format strings.

Nowhere becomes this more apparent than in aspects like JavaScript’s brilliantly designed Date class, which astounds people to this day with its elegant handling of JavaScript’s powerful type ...