JS根据身份证号码精确计算年龄和性别

/**
 * 根据身份证号得到姓别和精确计算年龄
 */
function analyzeIDCard(IDCard){
    var sexAndAge = {};
    //获取用户身份证号码
    var userCard = IDCard;
    //如果身份证号码为undefind则返回空
    if(!userCard){
        return sexAndAge;
    }
    //获取性别
    if(parseInt(userCard.substr(16,1)) % 2 == 1){
        sexAndAge.sex = '1（男）'
    }else{
        sexAndAge.sex = '0（女）'
    }
    //获取出生年月日
    //userCard.substring(6,10) + "-" + userCard.substring(10,12) + "-" + userCard.substring(12,14);
    var yearBirth = userCard.substring(6,10);
    var monthBirth = userCard.substring(10,12);
    var dayBirth = userCard.substring(12,14);
    //获取当前年月日并计算年龄
    var myDate = new Date();
    var monthNow = myDate.getMonth() + 1;
    var dayNow = myDate.getDay();
    var age = myDate.getFullYear() - yearBirth;
    if(monthNow < monthBirth || (monthNow == monthBirth && dayNow < dayBirth)){
        age--;
    }
    //得到年龄
    sexAndAge.age = age;
    //返回性别和年龄
    return sexAndAge;
}

/*测试*/
var ID = analyzeIDCard('510612199004174732');
console.info(ID);