function getAge(identityCard) {
var len = (identityCard + "").length;
if (len == 0) {
return 0;
} else {
if ((len != 15) && (len != 18))//身份证号码只能为15位或18位其它不合法
{
return 0;
}
}
var strBirthday = "";
if (len == 18)//处理18位的身份证号码从号码中得到生日和性别代码
{
strBirthday = identityCard.substr(6, 4) + "/" + identityCard.substr(10, 2) + "/" + identityCard.substr(12, 2);
}
if (len == 15) {
strBirthday = "19" + identityCard.substr(6, 2) + "/" + identityCard.substr(8, 2) + "/" + identityCard.substr(10, 2);
}
//时间字符串里，必须是“/”
var birthDate = new Date(strBirthday);
var nowDateTime = new Date();
var age = nowDateTime.getFullYear() - birthDate.getFullYear();
if (nowDateTime.getMonth() < birthDate.getMonth() || (nowDateTime.getMonth() == birthDate.getMonth() && nowDateTime.getDate() < birthDate.getDate())) {
age--;
}
return age;
}
