身份证验证JS
http://www.cnblogs.com/jiandanfy/articles/1061248.html
<body test="green" ><center><br><br><br><br><br><br><br><br>
<script language="javascript">
//日期 初步验证
function isValidDate(day, month, year) {
if (month == 2) {
var leap = (year % 4 == 0 &&
(year % 100 != 0 || year % 400 == 0));
if (day>29 || (day == 29 && !leap)) {
return false;
}
}
return true;
}
function checkId(pId){
var arrVerifyCode = [1,0,"x",9,8,7,6,5,4,3,2];
var Wi = [7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2];
var Checker = [1,9,8,7,6,5,4,3,2,1,1];
if(pId.length != 15 && pId.length != 18) return "身份证号共有 15 码或18位";
var Ai=pId.length==18?pId.substring(0,17):pId.slice(0,6)+"19"+pId.slice(6,16);
if (!/^\d+$/.test(Ai)) return "身份证除最后一位外，必须为数字！";
var yyyy=Ai.slice(6,10),mm=Ai.slice(10,12)-1,dd=Ai.slice(12,14);
var d=new Date(yyyy,mm,dd),year=d.getFullYear(),mon=d.getMonth(),day=d.getDate(),now=new Date();
if (year!=yyyy || mon!=mm || day!=dd || d>now || now.getFullYear()-year>110 ||!isValidDate(dd, mm, yyyy) ) return "身份证输入错误！";
for(var i=0,ret=0;i<17;i++) ret+=Ai.charAt(i)*Wi[i];
Ai+=arrVerifyCode[ret %=11];
return pId.length ==18 && pId.toLowerCase() != Ai?"身份证输入错误！":Ai;
};
function getInfo(id){
//根据身份证取 省份,生日，性别
id=checkId(id)
var fid=id.substring(0,16),lid=id.substring(17);
if (isNaN(fid)|| ( isNaN(lid) && (lid!="x") )) return "错误的身份证号码"
var id=String(id),sex=id.slice(14,17)%2?"男":"女"
prov=areaCode[id.slice(0,6)] || areaCode[id.slice(0,4)] || areaCode[id.slice(0,2)] || "无法确定"
var birthday=(new Date(id.slice(6,10),id.slice(10,12)-1,id.slice(12,14))).toLocaleDateString()
return [prov,birthday,sex]
}
function test(){
var cid = document.getElementById("cid");
alert(getInfo(cid.value)) ;
}
</script>
<form>
<input type="text" id="cid">
<input type="button" onclick="test()" value="检查输入的身份证号是否正确"> </form>
<center><body>