技術標籤：JavaScript

const getBirthdayByIdNO=(IdNO:string)=>{
  let birthday = "";
  if (IdNO.length===18) {
    birthday = IdNO.substr(6,8);
    return birthday.replace(/(.{4})(.{2})/,"$1-$2-");
  }; 
  if(IdNO.length===15){
    birthday = "19"+IdNO.substr(6,6);
    return birthday.replace(/(.{4})(.{2})/,"$1-$2-");
  };
  return "";
};
 

const birthDay = getBirthDayByIdNO('652324198912300046');

console.log('birthDay',birthDay);