web怎么求年龄。。。。。。

web怎么求年龄。。。。。。。。。。。。。。。。。。。。。。。。

？？？？？

function getAge(strAge) {
  d = new Date();
  var nowYear = d.getFullYear();
  var nowMonth = d.getMonth() + 1; //记得加1
  var nowDay = d.getDate();
  var returnAge;
  var d = new Date(strAge);
  var birYear = d.getFullYear();
  var birMonth = d.getMonth() + 1;
  var birDay = d.getDate();
  if (
    d.getFullYear() == birYear &&
    d.getMonth() + 1 == birMonth &&
    d.getDate() == birDay
  ) {
    if (nowYear == birYear) {
      returnAge = 0; //
    } else {
      var ageDiff = nowYear - birYear; //
      if (ageDiff > 0) {
        if (nowMonth == birMonth) {
          var dayDiff = nowDay - birDay; //
          if (dayDiff < 0) {
            returnAge = ageDiff - 1;
          } else {
            returnAge = ageDiff;
          }
        } else {
          var monthDiff = nowMonth - birMonth; //
          if (monthDiff < 0) {
            returnAge = ageDiff - 1;
          } else {
            returnAge = ageDiff;
          }
        }
      } else {
        return "出生日期晚于今天，数据有误"; //返回-1 表示出生日期输入错误 晚于今天
      }
    }
    return returnAge;
  } else {
    return "输入的日期格式错误！";
  }
}
console.log(getAge('2012-10-12'));

有用记得给个采纳

public int GetAgeByBirthdate(DateTime birthdate)
    {
        DateTime now = DateTime.Now;
        int age = now.Year - birthdate.Year;
        if (now.Month < birthdate.Month || (now.Month == birthdate.Month && now.Day < birthdate.Day))
        {
            age--;
        }
        return age < 0 ? 0 : age;
}

C#更简单，掉这个方法。传日期进来