JSFiddle - React, Tailwind, and code Playground

by uedatakuya

JavaScript

var map = {
    '%Y': '2013',
    '%m': '12',
    '%d': '09',
    '%a': '月',
    '%H': '15',
    '%M': '00',
    '%S': '00'
};
var fmt = "%Y年%m月%d日（%a） %H時%M分";
var d = fmt.replace(/(%[YmdaHMS])/g, function(str, m, offset, s){
    return map[m] || '';
});
alert(d);