JavaScript 将长日期转换为短日期

Question

I have the (german) Output: Fri Sep 09 2022 02:00:00 GMT+0200 (Mitteleuropäische Sommerzeit) and I would like to have just the yyyy-mm-dd date: 2022-09-09

Thank you for the help!

Answer 1

Date's are not too great in JS, the reason that libs like moment.js etc are very popular.

But one idea is to simply replace the GMT+0300 to GMT+0000, and then parse into Date object and use ToISOString and slice the first 10 chars.

eg.

 function shortDate(dt) { return new Date(dt.replace(/GMT\+..../,'GMT+0000')).toISOString().slice(0, 10); } console.log(shortDate('Fri Sep 09 2022 02:00:00 GMT+0200 (Mitteleuropäische Sommerzeit)'));