• 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
          
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