身份证号验证（严格）代码,JS代码库,德仔网

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【JS】身份证号验证（严格）
作者:瑜涵 / 发布于2015/2/15/ 583

	!function(win){
	 var _idcard,_gender,_birthday,_address,_msg,_code;
	 var _coefficient = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1];
	 var _verify_code = ['1', '0', 'x', '9', '8', '7', '6', '5', '4', '3', '2'];
	 var _base_code = [];
	 var _date_verify = {"01":31,"02":null,"03":31,"04":30,"05":31,"06":30,"07":31,"08":31,"09":30,"10":31,"11":30,"12":31};
	 var _area_code = ["11","12","13","14","15","21","22" ,"23","31","32","33","34","35","36","37","41","42","43","44" ,"45","46","50","51","52","53","54","61","62","63","64","65","71","81","82","91"];
	 var _gender_code = ['\u5973','\u7537'];
	 var _msg_code = ['\u8f93\u5165\u7684\u8eab\u4efd\u8bc1\u53f7\u4e0d\u662f15\u4f4d\u548c18\u4f4d\u7684','\u65e0\u6548\u7684\u8eab\u4efd\u8bc1\u53f7','\u8eab\u4efd\u8bc1\u5408\u6cd5','\u4e0d\u662f15\u4f4d\u8eab\u4efd\u8bc1\u5417','15\u4f4d\u8eab\u4efd\u8bc1\u53f7'];
	 var idcard = function(){};
	 idcard.prototype = {
	 verify:function(idcard){
	 if(idcard.length == 15){
	 return this.to18(idcard);
	 }
	 _idcard = idcard;
	 parse();
	 return _return();
	 },
	 to18:function(idcard){
	 _idcard = idcard;
	 _15to18();
	 return _return();
	 }
	 }
	 function _return(){
	 if(typeof _code_area == 'undefined') _code_area = {};
	 // var _code_area = _code_area ||{};
	 try{
	 _address = _code_area[_idcard.substring(0,6)];
	 }catch(e){
	 _address = '\u672a\u77e5\u533a\u57df';
	 }
	 return {
	 gender:_gender,
	 birthday:_birthday,
	 msg:_msg,
	 code:_code,
	 address:_address,
	 idcard:_idcard
	 }
	 }
	 function _15to18(){
	 if(_idcard.length != 15){
	 return false;
	 }
	 _idcard = _idcard.substring(0,6)+"19"+_idcard.substring(6);
	 if(!_verify_area()) return;
	 if(!_verify_birthday()) return;
	 if(!_verify_base_code()) return;
	 var remaining = _get_verify_code();
	 _idcard = _idcard+remaining;
	 _get_gender();
	 _code = 0;
	 _msg = _msg_code[4];
	
	 }
	 function _verify_birthday(){
	 _msg = _msg_code[1];
	 var _year,_month,_day;
	 _year = _idcard.substring(6,10);
	 _month= _idcard.substring(10,12);
	 _day = _idcard.substring(12,14);
	 if(!(_month in _date_verify)){
	 return false;
	 }
	 if(+_day<1){
	 return false;
	 }
	 if(_date_verify[_month] != null && (+_day>_date_verify[_month])){
	 return false;
	 }
	 if(_date_verify[_month] == null){
	 if((_year%4==0&&_year%100!=0)||(_year%400==0) && _day>29){
	 return false;
	 }
	 else{
	 if (_day>28) {
	 return false;
	 };
	 }
	 }
	 _birthday = _year+'-'+_month+'-'+_day;
	 return true;
	 }
	
	 function _verify_length(){
	 _msg = _msg_code[0];
	 if(_idcard.length!=18 && _idcard.length!=15){
	 return false;
	 }
	 return true;
	 }
	 function _verify_area(){
	 var _area;
	 _msg = _msg_code[1];
	 _area = _idcard.substring(0,2);
	 for(var i=0;i<_area_code.length;i++){
	 if(_area_code[i]==_area){
	 return true;
	 }
	 }
	 return false;
	 }
	 function _get_gender(){
	 var _sex_code = _base_code[16];
	 var _remaining = _sex_code%2;
	 _gender = _gender_code[_remaining];
	 }
	 function _verify_base_code(){
	 var _eightcardid = _idcard.substring(0,17);
	 _msg = _msg_code[1];
	 try{
	 for(var i=0;i<17;i++){
	 var _k = _idcard.substring(i,i+1);
	 _base_code.push(+_k);
	 }
	 }catch(e){
	 return false;
	 }
	 return true;
	 }
	 function _get_verify_code(){
	 _msg = _msg_code[1];
	 var _remaining = 0;
	 var _sum = 0;
	 for(var i=0;i<17;i++){
	 _sum += _base_code[i]*_coefficient[i];
	 }
	 remaining = _sum % 11;
	 return _verify_code[remaining];
	 }
	 function _verify(){
	 var remaining = _get_verify_code();
	 var _verify_ = _idcard.substring(17).toLowerCase();
	 if (remaining != _verify_) {
	 return false;
	 };
	 return true;
	 }
	
	 function parse(){
	 _code = 1;
	 if(!_verify_length()) return;
	 if(!_verify_area()) return;
	 if(!_verify_birthday()) return;
	 if(!_verify_base_code()) return;
	 if(!_verify()) return;
	 _get_gender();
	 _code = 0;
	 _msg = _msg_code[2];
	 }
	 win.idcard = new idcard();
	}(window);
	//示例：
	idcard.verify("xxxxxxxxxxxxxxxxxx");
	idcard.to18("xxxxxxxxxxxxxxxxxx");
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