var vcity={ 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\" 
}; 

checkCard = function(card) 
{ 

//是否为空 
if(card === \'\') 
{ 

return \"请输入身份证号，身份证号不能为空\"; 
} 
//校验长度，类型 
if(isCardNo(card) === false) 
{ 

return \"您输入的身份证号码不正确，请重新输入\"; 
} 
//检查省份 
if(checkProvince(card) === false) 
{ 
return \"您输入的身份证号码不正确,请重新输入\"; 
} 
//校验生日 
if(checkBirthday(card) === false) 
{ 
return \"您输入的身份证号码生日不正确,请重新输入\"; 
} 
//检验位的检测 
if(checkParity(card) === false) 
{ 
return \"您的身份证校验位不正确,请重新输入\"; 
} 

return \"ok\"; 
}; 


//检查号码是否符合规范，包括长度，类型 
isCardNo = function(card) 
{ 
//身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X 
var reg = /(^\\d{15}$)|(^\\d{17}(\\d|X)$)/; 
if(reg.test(card) === false) 
{ 
return false; 
} 

return true; 
}; 

//取身份证前两位,校验省份 
checkProvince = function(card) 
{ 
var province = card.substr(0,2); 
if(vcity[province] == undefined) 
{ 
return false; 
} 
return true; 
}; 

//检查生日是否正确 
checkBirthday = function(card) 
{ 
var len = card.length; 
//身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字 
if(len == \'15\') 
{ 
var re_fifteen = /^(\\d{6})(\\d{2})(\\d{2})(\\d{2})(\\d{3})$/; 
var arr_data = card.match(re_fifteen); 
var year = arr_data[2]; 
var month = arr_data[3]; 
var day = arr_data[4]; 
var birthday = new Date(\'19\'+year+\'/\'+month+\'/\'+day); 
return verifyBirthday(\'19\'+year,month,day,birthday); 
} 
//身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X 
if(len == \'18\') 
{ 
var re_eighteen = /^(\\d{6})(\\d{4})(\\d{2})(\\d{2})(\\d{3})([0-9]|X)$/; 
var arr_data = card.match(re_eighteen); 
var year = arr_data[2]; 
var month = arr_data[3]; 
var day = arr_data[4]; 
var birthday = new Date(year+\'/\'+month+\'/\'+day); 
return verifyBirthday(year,month,day,birthday); 
} 
return false; 
}; 

//校验日期 
verifyBirthday = function(year,month,day,birthday) 
{ 
var now = new Date(); 
var now_year = now.getFullYear(); 
//年月日是否合理 
if(birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day) 
{ 
//判断年份的范围（3岁到100岁之间) 
var time = now_year - year; 
if(time >= 3 && time <= 100) 
{ 
return true; 
} 
return false; 
} 
return false; 
}; 

//校验位的检测 
checkParity = function(card) 
{ 
//15位转18位 
card = changeFivteenToEighteen(card); 
var len = card.length; 
if(len == \'18\') 
{ 
var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
var arrCh = new Array(\'1\', \'0\', \'X\', \'9\', \'8\', \'7\', \'6\', \'5\', \'4\', \'3\', \'2\'); 
var cardTemp = 0, i, valnum; 
for(i = 0; i < 17; i ++) 
{ 
cardTemp += card.substr(i, 1) * arrInt[i]; 
} 
valnum = arrCh[cardTemp % 11]; 
if (valnum == card.substr(17, 1)) 
{ 
return true; 
} 
return false; 
} 
return false; 
}; 

//15位转18位身份证号 
changeFivteenToEighteen = function(card) 
{ 
if(card.length == \'15\') 
{ 
var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
var arrCh = new Array(\'1\', \'0\', \'X\', \'9\', \'8\', \'7\', \'6\', \'5\', \'4\', \'3\', \'2\'); 
var cardTemp = 0, i; 
card = card.substr(0, 6) + \'19\' + card.substr(6, card.length - 6); 
for(i = 0; i < 17; i ++) 
{ 
cardTemp += card.substr(i, 1) * arrInt[i]; 
} 
card += arrCh[cardTemp % 11]; 
return card; 
} 
return card; 
};