JavaScript正则表达式验证身份证号码是否合法(两种方法)

function isCardID(sId){ var iSum=0 ; var info="" ; if(!/^/d{17}(/d|x)$/i.test(sId)) return "你输入的身份证长度或格式错误"; sId=sId.replace(/x$/i,"a"); if(aCity[parseInt(sId.substr(0,2))]==null) return "你的身份证地区非法"; sBirthday=sId.substr(6,4)+"-"+Number(sId.substr(10,2))+"-"+Number(sId.substr(12,2)); var d=new Date(sBirthday.replace(/-/g,"/")) ; if(sBirthday!=(d.getFullYear()+"-"+ (d.getMonth()+1) + "-" + d.getDate()))return "身份证上的出生日期非法"; for(var i = 17;i>=0;i --) iSum += (Math.pow(2,i) % 11) * parseInt(sId.charAt(17 - i),11) ; if(iSum%11!=1) return "你输入的身份证号非法"; //aCity[parseInt(sId.substr(0,2))]+","+sBirthday+","+(sId.substr(16,1)%2?"男":"女");//此次还可以判断出输入的身份证号的人性别 return true;}

function scCard(){  var scType=document.getElementById("sc_card_type").value;  if(scType=="1"){   var scCard=document.getElementById("sc_card_num").value;       if(scCard.length!=0){       if(!checkCard(scCard)){       $("#errorTips").html("身份证号码格式错误");       }else{       $("#errorTips").html("");       }       }  }  return false;  }  //function checkidno(obj) {   var vcity={ 11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",     21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",     33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",     42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",     51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",     63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"    };  checkCard = function(obj)  {   //var card = document.getElementById('card_no').value;   //是否为空   // if(card === '')   // {   //  return false;   //}   //校验长度，类型   if(isCardNo(obj) === false)   {    return false;   }   //检查省份   if(checkProvince(obj) === false)   {    return false;   }   //校验生日   if(checkBirthday(obj) === false)   {    return false;   }   //检验位的检测   if(checkParity(obj) === false)   {    return false;   }   return true;  };  //检查号码是否符合规范，包括长度，类型  isCardNo = function(obj)  {   //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X   var reg = /(^/d{15}$)|(^/d{17}(/d|X)$)/;   if(reg.test(obj) === false)   {    return false;   }   return true;  };  //取身份证前两位,校验省份  checkProvince = function(obj)  {   var province = obj.substr(0,2);   if(vcity[province] == undefined)   {    return false;   }   return true;  };  //检查生日是否正确  checkBirthday = function(obj)  {   var len = obj.length;   //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字   if(len == '15')   {    var re_fifteen = /^(/d{6})(/d{2})(/d{2})(/d{2})(/d{3})$/;    var arr_data = obj.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 = obj.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 >= 0 && time <= 130)    {     return true;    }    return false;   }   return false;  };  //校验位的检测  checkParity = function(obj)  {   //15位转18位   obj = changeFivteenToEighteen(obj);   var len = obj.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 += obj.substr(i, 1) * arrInt[i];    }    valnum = arrCh[cardTemp % 11];    if (valnum == obj.substr(17, 1))    {     return true;    }    return false;   }   return false;  };  //15位转18位身份证号  changeFivteenToEighteen = function(obj)  {   if(obj.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;     obj = obj.substr(0, 6) + '19' + obj.substr(6, obj.length - 6);    for(i = 0; i < 17; i ++)    {     cardTemp += obj.substr(i, 1) * arrInt[i];    }    obj += arrCh[cardTemp % 11];    return obj;   }   return obj;  };