js验证15位或18位身份证
本篇文章是本人在网上搜集了一些验证，然后又个人进行一定修改的关于身份证的验证，欢迎修改指正。。。。。
function IdCardValidateRule(idCard) {
var tip;
//1.传入15位或者18位身份证号码，18位号码末位可以为数字或X
idCard = idCard.toUpperCase();
//2.去掉身份证的左右空格
idCard = trim(idCard);
//3.判断输入的身份证长度
if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(idCard))) {
tip = "身份证号长度不正确或不符合规定！";
return false;
}
//4.验证前两位城市编码是否正确
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" };
if (aCity[parseInt(idCard.substr(0, 2))] == null) {
tip = "身份证号不正确或不符合规定！";
return false;
}
//5.验证出生日期和校验位
if (validId15(idCard) || validId18(idCard)) {
return true;
} else {
return false;
}
//身份证18位号码验证
function validId18(str) {
if (str.length != 18) return false;//长度验证
//1. 出生日期验证
re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
//also re = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
arrSplit = str.match(re); //检查生日日期是否正确
if (arrSplit != null) {
if (!YearMonthDayValidate(arrSplit[2], arrSplit[3], arrSplit[4])) {
tip = "出生日期不正确";
return false;
}
}
else {
return false;
}
//2. 校验位验证
iW = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1);//加权因子
iSum = 0;
for (i = 0; i < 17; i++) {
iC = str.charAt(i);
iVal = parseInt(iC);
iSum += iVal * iW[i];
}
iJYM = iSum % 11;//取模
var sJYM = '';
//获取的模查找对应的校验码字符值
if (iJYM == 0) sJYM = "1";
else if (iJYM == 1) sJYM = "0";
else if (iJYM == 2) sJYM = "x";
else if (iJYM == 3) sJYM = "9";
else if (iJYM == 4) sJYM = "8";
else if (iJYM == 5) sJYM = "7";
else if (iJYM == 6) sJYM = "6";
else if (iJYM == 7) sJYM = "5";
else if (iJYM == 8) sJYM = "4";
else if (iJYM == 9) sJYM = "3";
else if (iJYM == 10) sJYM = "2";
var cCheck = str.charAt(17).toLowerCase();
if (cCheck != sJYM) {
return false;
}
return true;
}
//身份证15位(1984-2004)身份验证
function validId15(str) {
if (str.length != 15) return false;
//1. 出生日期验证
re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
arrSplit = str.match(re); //检查生日日期是否正确
if (arrSplit != null) {
if (parseInt(arrSplit[2].substr(1)) > 0) {
arrSplit[2] = "19" + arrSplit[2];
} else {
arrSplit[2] = "20" + arrSplit[2]
}
if (!YearMonthDayValidate(arrSplit[2], arrSplit[3], arrSplit[4])) {
tip = "出生日期不正确";
return false;
}
} else {
return false;
}
return true;
}
//出生日期的年月日验证
function YearMonthDayValidate(year, month, day) {
year = parseInt(year); //年
month = parseInt(month);//月
day = parseInt(day);//日
//判断年，月,日是否为空
if (isNaN(year) || isNaN(month) || isNaN(day)) return false;
//判断月是否是在1-12月之间
if (month < 1 || month > 12) return false;
//返回当月的最后一天
var date = new Date(year, month, 0);
//判断是否超过天数范围
if (day < 1 || day > date.getDate()) return false;
return true;
}
//去掉字符串两端左右空格
function trim(strs) {
return strs.replace(/(^\s*)|(\s*$)/g, ""); //使用js正则表达式方法
}
}
补充： 第一代居民身份证（15位）自2013年1月1日已经废止停止使用了。
