身份证号验证

function isCardID(sId) {
    //return true;//暂时去掉
    var aCity = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外" }
    var iSum = 0;
    var info = "";
    if (!/^\d{17}(\d|x)$/i.test(sId)) return false;//"你输入的身份证长度或格式错误";
    sId = sId.replace(/x$/i, "a");
    if (aCity[parseInt(sId.substr(0, 2))] == null) return false; //"你的身份证地区非法";
    sBirthday = sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2));
    var d = new Date(sBirthday.replace(/-/g, "/"));
    if (sBirthday != (d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate())) return false;//"身份证上的出生日期非法";
    for (var i = 17; i >= 0; i--) iSum += (Math.pow(2, i) % 11) * parseInt(sId.charAt(17 - i), 11);
    if (iSum % 11 != 1) return false;//"你输入的身份证号非法";
    //aCity[parseInt(sId.substr(0,2))]+","+sBirthday+","+(sId.substr(16,1)%2?"男":"女");//此次还可以判断出输入的身份证号的人性别
    return true;
}