js验证身份证号

/*
 * 身份证检测（格式、地区、生日、年龄范围）
 * code:检测字符串 rangeAge：年龄范围[格式为：25-55]
 * 返回值 0：为空 ，不为0则验证不通过
 */
var cityArr = { : "北京", : "天津", : "河北", : "山西", : "内蒙古", : "辽宁", : "吉林", : "黑龙江", : "上海", : "江苏", : "浙江", : "安徽", : "福建", : "江西", : "山东", : "河南", : "湖北", : "湖南", : "广东", : "广西", : "海南", : "重庆", : "四川", : "贵州", : "云南", : "西藏", : "陕西", : "甘肃", : "青海", : "宁夏", : "新疆" }//, 71: "台湾", 81: "香港", 82: "澳门", 91: "国外"
function CheckIdentityCode(code, rangeAge) {
    code = $.trim(code);
    if (code.length ==  || code == null || code == undefined) {
        return "";
    }
    var info = ""
    reg = /(^\d{}$)|(^\d{}([-]|X)$)/i;
    if (!reg.test(code)) {
        return "格式不正确！";
    }
    code = code.replace(/x$/i, "a");
    if (cityArr[parseInt(code.substr(, ))] == null) {
        return "包含非法地区！";
    }
    birthDay = code.substr(, ) + "-" + Number(code.substr(, )) + "-" + Number(code.substr(, ));
    var d = new Date(birthDay.replace(/-/g, "/"));
    if (birthDay != (d.getFullYear() + "-" + (d.getMonth() + ) + "-" + d.getDate())) {
        return "包含非法出生日期！";
    }
    return GetAge(birthDay, rangeAge);
    //alert(cityArr[parseInt(code.substr(0, 2))] + "," + birthDay + "," + (code.substr(16, 1) % 2 ? "男" : "女") + " 年龄：" + age);
}
/*
 * 年龄检测是否合法
 * birthDay:出生年月[格式：1999-03-15] rangeAge：年龄范围[格式：25-55]
 * 返回值 为空合法 ，不为空则验证不通过
 */
function GetAge(birthDay, rangeAge) {
    if (rangeAge == null || rangeAge.indexOf("-") == -)
        return "";
    var msg = "";
    var nowDate = new Date();
    var bir = new Date(birthDay.split('-')[0], birthDay.split('-')[1], birthDay.split('-')[2]);var age = parseInt(Math.abs(nowDate - bir) /  /  /  /  / );//年龄：天数/365
    var min = ;
    var max = ;
    try {
        min = parseInt(rangeAge.split('-')[]);
        max = parseInt(rangeAge.split('-')[]);
    } catch (e) { }
    if ((min !=  || max != ) && (age < min || age > max))
        msg = "年龄必须满" + min + "~" + max + "周岁！";
    return msg;
}