工作中需要用到身份证验证,还要支持检查15位和18位。
我一时手懒，问同事有没有现成的函数可用，同事google了一下，扔给我一个 asp-vbscript版本的函数。
可我这边是客户端javascript呀，于是用改 vbs-->js
改完发现蛮好用的，同时发现 vbscript真的很啰嗦，居然写了50多行，我改成js 只用了11行。
当然,我并完全是指vbscript啰嗦，那个写这段vbs代码的无名氏也是个唐僧性格.....
先放出 vbscript代码,
<script language="vbscript">
'功能:检查身份证号码
Function CheckCardId(e)
arrVerifyCode = Split("1,0,x,9,8,7,6,5,4,3,2", ",")
Wi = Split("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2", ",")
Checker = Split("1,9,8,7,6,5,4,3,2,1,1", ",")
If Len(e) < 15 Or Len(e) = 16 Or Len(e) = 17 Or Len(e) > 18 Then
CheckCardId= "身份证号共有 15 码或18位"
CheckCardId = False
Exit Function
End If Dim Ai
If Len(e) = 18 Then
Ai = Mid(e, 1, 17)
ElseIf Len(e) = 15 Then
Ai = e
Ai = Left(Ai, 6) & "19" & Mid(Ai, 7, 9)
End If
If Not IsNumeric(Ai) Then
CheckCardId= "身份证除最后一位外，必须为数字！"
Exit Function
End If
Dim strYear, strMonth, strDay
strYear = CInt(Mid(Ai, 7, 4))
strMonth = CInt(Mid(Ai, 11, 2))
strDay = CInt(Mid(Ai, 13, 2))
BirthDay = Trim(strYear) + "-" + Trim(strMonth) + "-" + Trim(strDay)
If IsDate(BirthDay) Then
If DateDiff("yyyy",Now,BirthDay)<-140 or cdate(BirthDay)>date() Then
CheckCardId= "身份证输入错误！"
Exit Function
End If
If strMonth > 12 Or strDay > 31 Then
CheckCardId= "身份证输入错误！"
Exit Function
End If
Else
CheckCardId= "身份证输入错误！"
Exit Function
End If
Dim i, TotalmulAiWi
For i = 0 To 16
TotalmulAiWi = TotalmulAiWi + CInt(Mid(Ai, i + 1, 1)) * Wi(i)
Next
Dim modValue
modValue = TotalmulAiWi Mod 11
Dim strVerifyCode
strVerifyCode = arrVerifyCode(modValue)
Ai = Ai & strVerifyCode
CheckCardId = AiIf Len(e) = 18 And e <> Ai Then
CheckCardId= "身份证输入错误！"
Exit Function
End If
End Function
</script>
再放出 javascript版本代码
function checkId(pId){
//检查身份证号码 Go_Rush(阿舜) from http://ashun.cnblogs.com
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) , now=new Date();
var year=d.getFullYear() , mon=d.getMonth() , day=d.getDate();
if (year!=yyyy || mon!=mm || day!=dd || d>now || year<1940) 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 != Ai?"身份证输入错误！":Ai;
};
至于身份证算法的原理,请参阅: http://www.google.com/
最后，根据身份证号码取 省份，生日，性别就很简单了
<script language="javascript">
var id="342201570202003" //根据身份证取 省份,生日，性别 Go_Rush(阿舜) from http://ashun.cnblogs.com/
function getInfo(id){
var arr=[null,null,null,null,null,null,null,null,null,null,null,"北京","天津","河北","山西","内蒙古"
,null,null,null,null,null,"辽宁","吉林","黑龙江",null,null,null,null,null,null,null,"上海"
,"江苏","浙江","安微","福建","江西","山东",null,null,null,"河南","湖北","湖南","广东","广西","海南"
,null,null,null,"重庆","四川","贵州","云南","西藏",null,null,null,null,null,null,"陕西","甘肃"
,"青海","宁夏","新疆",null,null,null,null,null,"台湾",null,null,null,null,null,null,null,null
,null,"香港","澳门",null,null,null,null,null,null,null,null,"国外"]
id=checkId(id)
if (isNaN(id)) return "错误的身份证号码"
var id=String(id), prov=arr[id.slice(0,2)] , sex=id.slice(14,17)%2? "男" : "女"
var birthday=(new Date(id.slice(6,10) , id.slice(10,12)-1 , id.slice(12,14))).toLocaleDateString()
return [prov,birthday,sex]
}
alert(getInfo(id))
</script>上面的代码只能取到省份，要取到具体城市，请看我的另外一个随笔， 点这里
代码只拿我和几个同事的身份证号码测了一下，如果有Bug,请指出
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