JS to determine whether the date of birth is correct

var r =/^ (?:(?! 0000) [0-9]{4}-(?:(?: 0 [1-9]|1[0-2])-(?: 0 [1-9]|1[0-9]|2[0-8]) | (?: 0 [13-9]|1[0-2])-(?: 29|30) | (?: 0 [13578]|1[02])-31) | (?: [0-9]{2} (?: 0 [48]| [2468] [048]| [13579] [26]) | (?: 0 [48]| [2468] [048]| [13579] [26]) (xx) -02-29)$/            ; if (!r.test ($ ("#birthday_id"). Val ())) {                $u. Dialog_util.showtypedialog ("Common", "Please enter the correct birthday, as in 1993-07-09" );                $ ("#birthday_id"). Val ("");            }

1. Taking into account that the year of birth is 19xx years

2. Taking into account the month January to February

3. Considering the leap year February 29 days

4. Considering the common year February 28 days

5. All years including common year 1, 3, 5, 7, 8, 10, December inclusive of 31st

Content reference: http://www.jb51.net/article/50905.htm

JS to determine whether the date of birth is correct