moment.js

時刻ライブラリ

by ytyaru

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/locale/ja.js"></script>
<script src="https://getfirebug.com/firebug-lite-debug.js"></script>

JavaScript

const now = moment();
console.log(now.format("YYYY年MM月DD日(ddd) HH:mm:ss.SSS"));