身份证 验证 JS

ruknow

1. //--身份证号码验证-支持新的带x身份证
   
2. function isIdCardNo(num) {
   
3.     var factorArr = new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1);
   
4.     var error;
   
5.     var varArray = new Array();
   
6.     var intValue;
   
7.     var lngProduct = 0;
   
8.     var intCheckDigit;
   
9.      var intStrLen = num.length;
   
10.      var idNumber = num;
    
11.      // initialize
    
12.      if ((intStrLen != 15) && (intStrLen != 18)) {
    
13.          //error = "输入身份证号码长度不对！";
    
14.          //alert(error);
    
15.          //frmAddUser.txtIDCard.focus();
    
16.          return false;
    
17.      }
    
18.      // check and set value
    
19.      for(i=0;i<intStrLen;i++) {
    
20.          varArray[i] = idNumber.charAt(i);
    
21.          if ((varArray[i] < '0' || varArray[i] > '9') && (i != 17)) {
    
22.              //error = "错误的身份证号码！.";
    
23.              //alert(error);
    
24.              //frmAddUser.txtIDCard.focus();
    
25.              return false;
    
26.          } else if (i < 17) {
    
27.              varArray[i] = varArray[i]*factorArr[i];
    
28.          }
    
29.      }
    
30.      if (intStrLen == 18) {
    
31.          //check date
    
32.          var date8 = idNumber.substring(6,14);
    
33.          if (checkDate(date8) == false) {
    
34.              //error = "身份证中日期信息不正确！.";
    
35.              //alert(error);
    
36.              return false;
    
37.          }
    
38.          // calculate the sum of the products
    
39.          for(i=0;i<17;i++) {
    
40.              lngProduct = lngProduct + varArray[i];
    
41.          }
    
42.          // calculate the check digit
    
43.          intCheckDigit = 12 - lngProduct % 11;
    
44.          switch (intCheckDigit) {
    
45.              case 10:
    
46.                  intCheckDigit = 'X';
    
47.                  break;
    
48.              case 11:
    
49.                  intCheckDigit = 0;
    
50.                  break;
    
51.              case 12:
    
52.                  intCheckDigit = 1;
    
53.                  break;
    
54.          }
    
55.          // check last digit
    
56.          if (varArray[17].toUpperCase() != intCheckDigit) {
    
57.              //error = "身份证效验位错误!正确为： " + intCheckDigit + ".";
    
58.              //alert(error);
    
59.              return false;
    
60.          }
    
61.      }
    
62.      else{ //length is 15
    
63.          //check date
    
64.          var date6 = idNumber.substring(6,12);
    
65.          if (checkDate(date6) == false) {
    
66.              //alert("身份证日期信息有误！.");
    
67.              return false;
    
68.          }
    
69.      }
    
70.      //alert ("Correct.");
    
71.      return true;
    
72.  }