JS正则表达式验证身份证号码

第一种

function isCardNo(card)
{
// 身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
var reg = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x|*)$)/;
if(reg.test(card) === false)
{
alert(“身份证输入不合法”);
return false;
}
}

第二种
function isChinaIDCard(StrNo){
StrNo = StrNo.toString()
if (StrNo.length==18)
{
var a,b,c
if (!isInteger(StrNo.substr(0,17))) {return false}
a=parseInt(StrNo.substr(0,1))*7+parseInt(StrNo.substr(1,1))*9+parseInt(StrNo.substr(2,1))*10;
a=a+parseInt(StrNo.substr(3,1))*5+parseInt(StrNo.substr(4,1))*8+parseInt(StrNo.substr(5,1))*4;
a=a+parseInt(StrNo.substr(6,1))*2+parseInt(StrNo.substr(7,1))*1+parseInt(StrNo.substr(8,1))*6;
a=a+parseInt(StrNo.substr(9,1))*3+parseInt(StrNo.substr(10,1))*7+parseInt(StrNo.substr(11,1))*9;
a=a+parseInt(StrNo.substr(12,1))*10+parseInt(StrNo.substr(13,1))*5+parseInt(StrNo.substr(14,1))*8;
a=a+parseInt(StrNo.substr(15,1))*4+parseInt(StrNo.substr(16,1))*2;
b=a%11;

if (b==2) //最后一位为校验位
{
c=StrNo.substr(17,1).toUpperCase(); //转为大写X
}
else
{
c=parseInt(StrNo.substr(17,1));
}

switch(b)
{
case 0: if ( c!=1 ) {alert(“身份证好号码校验位错:最后一位应该为:1”);return false;}break;
case 1: if ( c!=0 ) {alert(“身份证好号码校验位错:最后一位应该为:0″);return false;}break;
case 2: if ( c!=”X”) {alert(“身份证好号码校验位错:最后一位应该为:X”);return false;}break;
case 3: if ( c!=9 ) {alert(“身份证好号码校验位错:最后一位应该为:9”);return false;}break;
case 4: if ( c!=8 ) {alert(“身份证好号码校验位错:最后一位应该为:8”);return false;}break;
case 5: if ( c!=7 ) {alert(“身份证好号码校验位错:最后一位应该为:7”);return false;}break;
case 6: if ( c!=6 ) {alert(“身份证好号码校验位错:最后一位应该为:6”);return false;}break;
case 7: if ( c!=5 ) {alert(“身份证好号码校验位错:最后一位应该为:5”);return false;}break;
case 8: if ( c!=4 ) {alert(“身份证好号码校验位错:最后一位应该为:4”);return false;}break;
case 9: if ( c!=3 ) {alert(“身份证好号码校验位错:最后一位应该为:3”);return false;}break;
case 10: if ( c!=2 ) {alert(“身份证好号码校验位错:最后一位应该为:2”);return false}
}
}
else //15位身份证号
{
if (!isInteger(StrNo)) {alert(“身份证号码错误,前15位不能含有英文字母！”);return false}
}

switch(StrNo.length){
case 15: return true;

case 18: return true;

}
alert(“输入的身份证号码必须为15位或者18位！”);
return false ;
}

第三种

<script type=”text/javascript”><!–
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 “}

function cidInfo(sId){
var iSum=0
var info=””
if(!/^d{17}(d|x)$/i.test(sId))return false;
sId=sId.replace(/x$/i,”a”);
if(aCity[parseInt(sId.substr(0,2))]==null)return “Error: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 “Error: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 “Error:非法证号”;
return aCity[parseInt(sId.substr(0,2))]+”,”+sBirthday+”,”+(sId.substr(16,1)%2?”男”:”女”)
}
document.write(cidInfo(“380524198002300016″),”<br/>”);
document.write(cidInfo(“340524198002300019″),”<br/>”)
document.write(cidInfo(“340524197711111111″),”<br/>”)
document.write(cidInfo(“34052419800101001x”),”<br/>”);
// –></script>