本文转载于(请务必注明作者出处):
               http://www.blogjava.net/titanaly/archive/2011/08/25/357268.html
 
1. 自定义js类如下:
// 构造函数,变量为15位或者18位的×××号码
function clsIDCard(CardNo) {
   this.Valid = false;
   this.ID15 = '';
   this.ID18 = '';
   this.Local = '';
   if (CardNo != null)
     this.SetCardNo(CardNo);
}


// 设置×××号码,15位或者18位
clsIDCard.prototype.SetCardNo = function(CardNo) {
   this.ID15 = '';
   this.ID18 = '';
   this.Local = '';
  CardNo = CardNo.replace( " ", "");
   var strCardNo;
   if (CardNo.length == 18) {
    pattern = /^\d{17}(\d|x|X)$/;
     if (pattern.exec(CardNo) == null)
       return;
    strCardNo = CardNo.toUpperCase();
  } else {
    pattern = /^\d{15}$/;
     if (pattern.exec(CardNo) == null)
       return;
    strCardNo = CardNo.substr(0, 6) + '19' + CardNo.substr(6, 9)
    strCardNo += this.GetVCode(strCardNo);
  }
   this.Valid = this.CheckValid(strCardNo);
}
// 校验×××有效性
clsIDCard.prototype.IsValid = function() {
   return this.Valid;
}
// 返回生日字符串,格式如下,1981-10-10
clsIDCard.prototype.GetBirthDate = function() {
   var BirthDate = '';
   if ( this.Valid)
    BirthDate = this.GetBirthYear() + '-' + this.GetBirthMonth() + '-'
        + this.GetBirthDay();
   return BirthDate;
}
// 返回生日中的年,格式如下,1981
clsIDCard.prototype.GetBirthYear = function() {
   var BirthYear = '';
   if ( this.Valid)
    BirthYear = this.ID18.substr(6, 4);
   return BirthYear;
}
// 返回生日中的月,格式如下,10
clsIDCard.prototype.GetBirthMonth = function() {
   var BirthMonth = '';
   if ( this.Valid)
    BirthMonth = this.ID18.substr(10, 2);
   if (BirthMonth.charAt(0) == '0')
    BirthMonth = BirthMonth.charAt(1);
   return BirthMonth;
}
// 返回生日中的日,格式如下,10
clsIDCard.prototype.GetBirthDay = function() {
   var BirthDay = '';
   if ( this.Valid)
    BirthDay = this.ID18.substr(12, 2);
   return BirthDay;
}

// 返回性别,1:男,0:女
clsIDCard.prototype.GetSex = function() {
   var Sex = '';
   if ( this.Valid)
    Sex = this.ID18.charAt(16) % 2;
   return Sex;
}

// 返回15位×××号码
clsIDCard.prototype.Get15 = function() {
   var ID15 = '';
   if ( this.Valid)
    ID15 = this.ID15;
   return ID15;
}

// 返回18位×××号码
clsIDCard.prototype.Get18 = function() {
   var ID18 = '';
   if ( this.Valid)
    ID18 = this.ID18;
   return ID18;
}

// 返回所在省,例如:上海市、浙江省
clsIDCard.prototype.GetLocal = function() {
   var Local = '';
   if ( this.Valid)
    Local = this.Local;
   return Local;
}

clsIDCard.prototype.GetVCode = function(CardNo17) {
   var Wi = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1);
   var Ai = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
   var cardNoSum = 0;
   for ( var i = 0; i < CardNo17.length; i++)
    cardNoSum += CardNo17.charAt(i) * Wi[i];
   var seq = cardNoSum % 11;
   return Ai[seq];
}

clsIDCard.prototype.CheckValid = function(CardNo18) {
   if ( this.GetVCode(CardNo18.substr(0, 17)) != CardNo18.charAt(17))
     return false;
   if (! this.IsDate(CardNo18.substr(6, 8)))
     return false;
   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"
  };
   if (aCity[parseInt(CardNo18.substr(0, 2))] == null)
     return false;
   this.ID18 = CardNo18;
   this.ID15 = CardNo18.substr(0, 6) + CardNo18.substr(8, 9);
   this.Local = aCity[parseInt(CardNo18.substr(0, 2))];
   return true;
}

clsIDCard.prototype.IsDate = function(strDate) {
   var r = strDate.match(/^(\d{1,4})(\d{1,2})(\d{1,2})$/);
   if (r == null)
     return false;
   var d = new Date(r[1], r[2] - 1, r[3]);
   return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[2] && d
      .getDate() == r[3]);
}
 
2. 页面只需要new出对象,并传递数据验证,并可获得相关数据( 住址 | 出生日期 | 性别 )即可:
$( "#cardNo").blur( function(event){
     var idCard = $( this).val();
    
     var checkFlag = new clsIDCard(idCard);    
     if( !checkFlag.IsValid() ){
      alert( "×××错误");
       return false;
    } else{
      alert( "出生于: " + checkFlag.GetBirthDate() + " 地区:" + checkFlag.GetLocal() + " sex:" + checkFlag.GetSex() );
    }    
  });