Working with Dates – `Date` object & Intl

Create a date:

const now = new Date();
const specific = new Date('2024-02-27T10:00:00Z');

Common methods:

• getFullYear(), getMonth(), getDate() – retrieve parts.
• toISOString(), toLocaleString() – format output.

Intl.DateTimeFormat for locale‑aware formatting:

const fmt = new Intl.DateTimeFormat('de-DE', { dateStyle:'short', timeStyle:'short' });
console.log(fmt.format(now)); // 27.02.24, 11:00

---

Example: Countdown timer

const end = new Date('2024-12-31');
setInterval(()=>{
  const diff = end - new Date();
  if(diff<=0){ clearInterval(this); console.log('Happy New Year!'); }
  else{ console.log(Math.floor(diff/1000)+' seconds left'); }
},1000);