JS验证身份证号码

//身份证验证
validCardId: function (sId) {
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)$/i.test(sId)) return "身份证格式不正确";
sId = sId.replace(/x$/i, "a");
if (aCity[parseInt(sId.substr(0, 2))] == null) return "身份证错误:非法地区";
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 "身份证错误:非法生日";
for (var i = 17; i >= 0; i--) iSum += (Math.pow(2, i) % 11) * parseInt(sId.charAt(17 - i), 11);
if (iSum % 11 != 1) return "身份证错误:非法证号";
return true;
}