var area={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(){
var card = document.getElementById('card_no').value;
//是否为空
if(card === ''){
alert('请输入身份证号，身份证号不能为空');
return false;
}
//校验长度，类型
if(isCardNo(card) === false){
alert('您输入的身份证号码不正确，请重新输入');
return false;
}
//检查省份
if(checkProvince(card) === false){
alert('您输入的身份证号码不正确,请重新输入');
return false;
}
//校验生日
if(checkBirthday(card) === false){
alert('您输入的身份证号码生日不正确,请重新输入');
return false;
}
//检验位的检测
if(checkParity(card) === false){
alert('您的身份证校验位不正确,请重新输入');
return false;
}
return true;//正确的身份证号
};
//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(area[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})$/;
var arr_data = card.match(re_fifteen);
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
return verifyBirthday(len,'19'+year,month,day);
}
//身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
if(len == '18'){
var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;
var arr_data = card.match(re_eighteen);
var year = arr_data[2];
var month = arr_data[3];
var day = arr_data[4];
return verifyBirthday(len,year,month,day);
}
return false;
};
//检查出生日期
verifyBirthday = function(idLen,year,month,day){
var curr_year = new Date().getFullYear();
var ereg='/^((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))$/';//平年出生月日的格式;
if (parseInt(year) % 4 == 0 || (parseInt(year) % 100 == 0 && parseInt(year)% 4 == 0 )){
ereg='/^((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))$/';//闰年出生月日的格式;
}
var time = curr_year - year;
if(time > 0 && time <= 200){//合理的年龄范围
var patt=new RegExp(ereg);
return patt.test(month+day); //检查闰年和非闰年的日期是否正确
}
return false;
};
//校验位的检查
checkParity = function(card){
var cardTemp = 0;
var len = card.length;
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');
if(len == '15'){
card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6);
}
for(var i = 0; i < 17; i ++){
cardTemp += card.substr(i, 1) * arrInt[i];
}
var valnum = arrCh[cardTemp % 11];
if (valnum == card.substr(17, 1)){
return true;
}
return false;
};
