JS身份证号码验证函数 支持带x的号码





<script type="text/javascript">
alert(isIdCardNo("440781197007220512"));
//--身份证号码验证-支持新的带x身份证
function isIdCardNo(num) 
{
    var factorArr =new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1);
    var error;
    var varArray =new Array();
    var intValue;
    var lngProduct =0;
    var intCheckDigit;
    var intStrLen = num.length;
    var idNumber = num;    
    // initialize
if ((intStrLen !=15) && (intStrLen !=18)) {
        //error = "输入身份证号码长度不对！";
//alert(error);
//frmAddUser.txtIDCard.focus();
returnfalse;
    }    
    // check and set value
for(i=0;i<intStrLen;i++) {
        varArray[i] = idNumber.charAt(i);
        if ((varArray[i] <'0'|| varArray[i] >'9') && (i !=17)) {
            //error = "错误的身份证号码！.";
//alert(error);
//frmAddUser.txtIDCard.focus();
returnfalse;
        } elseif (i <17) {
            varArray[i] = varArray[i]*factorArr[i];
        }
    }
    if (intStrLen ==18) {
        //check date
var date8 = idNumber.substring(6,14);
        if (checkDate(date8) ==false) {
            //error = "身份证中日期信息不正确！.";
//alert(error);
returnfalse;
        }        
        // calculate the sum of the products
for(i=0;i<17;i++) {
            lngProduct = lngProduct + varArray[i];
        }        
        // calculate the check digit
        intCheckDigit =12- lngProduct %11;
        switch (intCheckDigit) {
            case10:
                intCheckDigit ='X';
                break;
            case11:
                intCheckDigit =0;
                break;
            case12:
                intCheckDigit =1;
                break;
        }        
        // check last digit
if (varArray[17].toUpperCase() != intCheckDigit) {
            //error = "身份证效验位错误!...正确为： " + intCheckDigit + ".";
//alert(error);
returnfalse;
        }
    } 
    else{        //length is 15
//check date
var date6 = idNumber.substring(6,12);
        if (checkDate(date6) ==false) {
            //alert("身份证日期信息有误！.");
returnfalse;
        }
    }
    //alert ("Correct.");
returntrue;
}

function checkDate(date)
{
    returntrue;
}
</script>






/////////根据身份证判断性别和生日


<%@ Page language="c#" Codebehind="CordBirthday.aspx.cs" AutoEventWireup="false" Inherits="CodeDatum.birthday.CordBirthday"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
  <title>CordBirthday</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
  <meta name="CODE_LANGUAGE" Content="C#">
  <meta name="vs_defaultClientScript" content="JavaScript">
  <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
  <script language="javascript">
function showBirthday(val)
  {
   var birthdayValue;
   if(15==val.length)
   { //15位身份证号码
    birthdayValue = val.charAt(6)+val.charAt(7);
    if(parseInt(birthdayValue)<10)
    {
     birthdayValue ='20'+birthdayValue;
    }
    else
    {
     birthdayValue ='19'+birthdayValue;
    }
    birthdayValue=birthdayValue+'-'+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11);
    if(parseInt(val.charAt(14)/2)*2!=val.charAt(14))
     document.all.sex.value='男';
    else
     document.all.sex.value='女';
    document.all.birthday.value=birthdayValue;
   }
   if(18==val.length)
   { //18位身份证号码
    birthdayValue=val.charAt(6)+val.charAt(7)+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11)  

   +'-'+val.charAt(12)+val.charAt(13);
    if(parseInt(val.charAt(16)/2)*2!=val.charAt(16))
     document.all.sex.value='男';
    else
     document.all.sex.value='女';
    if(val.charAt(17)!=IDCard(val))
    {
     document.all.idCard.style.backgroundColor='#ffc8c8';
    }
    else
    {
     document.all.idCard.style.backgroundColor='white';
    }
    document.all.birthday.value=birthdayValue;
   }
  }

  // 18位身份证号最后一位校验
function IDCard(Num)
  {
   if (Num.length!=18)
    returnfalse;
   var x=0;
   var y='';

   for(i=18;i>=2;i--)
    x = x + (square(2,(i-1))%11)*parseInt(Num.charAt(19-i-1));
   x%=11;
   y=12-x;
   if (x==0)
    y='1';
   if (x==1)
    y='0';
   if (x==2)
    y='X';
   return y;
  }

  // 求得x的y次方
function square(x,y)
  {
   var i=1;
   for (j=1;j<=y;j++)
    i*=x;
   return i;
  }
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
  <form id="Form1" method="post" runat="server">
   <table align="center">
    <tr>
     <td align="center">身份证：<input type="text" name="idCard" id="idCard"></td>
</tr>
<tr>
     <td align="center">性    别：<input type="text" name="sex" id="sex"></td>
</tr>
<tr>
     <td align="center">生    日：<input type="text" name="birthday" id="birthday"></td>
</tr>
<tr>
     <td align="center"><input type="button" onclick="showBirthday(document.all.idCard.value)" value="OK"></td>
</tr>
</table>
</form>
</body>
</HTML>





        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/lfzm/p/2055939.html