[Javascript] 만나이 계산 함수

프론트앤드 이야기/JavaScript & JQuery

한희성 2018. 8. 28. 14:31

function calcAge(birth) {

var date = new Date();

var year = date.getFullYear();

var month = (date.getMonth() + 1);

var day = date.getDate();

if (month < 10) month = '0' + month;

if (day < 10) day = '0' + day;

var monthDay = month + day;

birth = birth.replace('-', '').replace('-', '');

var birthdayy = birth.substr(0, 4);

var birthdaymd = birth.substr(4, 4);

var age = monthDay < birthdaymd ? year - birthdayy - 1 : year - birthdayy;

return age;

}