新来小弟，求身份证验证问题！

Question

下边的代码可以检测是否符合规则，但仍然无法确定是不是真实有效的身份证号码，想知道真实有效，只能问公安局了：）
建议下次先搜索，这个问题也讨论过不少次了~!-_-
<script>
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("620102198006222713"),"<br>")
document.write(cidInfo("34052419800101001x"),"<br>");
</script>

Answer 1

PF！PF！
请问老大怎么知道身份证号码生成的算法的？
别告诉我你是负责生成这个的啊！
还有，怎么结帖？

Answer 2

给上一个可以检查15位和18位身份证号码的js,通过上面程序修改得来得
<script>
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"}
//检查身份证:15位或18位
function checkIdCard(sId){
var iSum=0
var info=""
var idCardLength = sId.length
if(!/^\d{17}(\d|x)$/i.test(sId)&&!/^\d{15}$/i.test(sId)) return false;
sId=sId.replace(/x$/i,"a");//在后面的运算中x相当于数字10,所以转换成a
if(aCity[parseInt(sId.substr(0,2))]==null)return false;
if (idCardLength==18) {
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;
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;
} else if (idCardLength==15) {
sBirthday=sId.substr(6,2)+"-"+Number(sId.substr(8,2))+"-"+Number(sId.substr(10,2));
var d=new Date(sBirthday.replace(/-/g,"/"))
if(sBirthday!=(d.getFullYear().toString().substr(2,2)+"-"+ (d.getMonth()+1) + "-" + d.getDate()))return false;
}
return true;
}
</script>