Format date using the specified pattern.

formatDate(new Date(), 'm/d/yy') // -> 2/3/21

Special characters are:

• d: Day of the month as digits; no leading zero for single-digit days.

• dd: Day of the month as digits; leading zero for single-digit days.

• ddd: Day of the week as a three-letter abbreviation.

• dddd: Day of the week as its full name.

• m: Month as digits; no leading zero for single-digit months.

• mm: Month as digits; leading zero for single-digit months.

• mmm: Month as a three-letter abbreviation.

• mmmm: Month as its full name.

• yy: Year as last two digits; leading zero for years less than 10.

• yyyy: Year represented by four digits.

• h: Hours; no leading zero for single-digit hours (12-hour clock).

• hh: Hours; leading zero for single-digit hours (12-hour clock).

• H: Hours; no leading zero for single-digit hours (24-hour clock).

• HH: Hours; leading zero for single-digit hours (24-hour clock).

• M: Minutes; no leading zero for single-digit minutes.

• MM: Minutes; leading zero for single-digit minutes.

• s: Seconds; no leading zero for single-digit seconds.

• ss: Seconds; leading zero for single-digit seconds.

• l: Milliseconds; 3 digits

• L: Milliseconds; 2 digits.

• t: Lowercase, single-character time marker string: a or p.

• tt: Lowercase, two-character time marker string: am or pm.

• T: Uppercase, single-character time marker string: A or P.

• TT: Uppercase, two-character time marker string: AM or PM.