Javascript 正则校验身份证

  1 var vcity={ 11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",  
  2             21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",  
  3             33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",  
  4             42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",  
  5             51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",  
  6             63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"  
  7            };  
  8   
  9 checkCard = function()  
 10 {  
 11     var card = document.getElementById(‘card_no‘).value;  
 12     //是否为空  
 13     if(card === ‘‘)  
 14     {  
 15         alert(‘请输入身份证号，身份证号不能为空‘);  
 16         document.getElementById(‘card_no‘).focus;  
 17         return false;  
 18     }  
 19     //校验长度，类型  
 20     if(isCardNo(card) === false)  
 21     {  
 22         alert(‘您输入的身份证号码不正确，请重新输入‘);  
 23         document.getElementById(‘card_no‘).focus;  
 24         return false;  
 25     }  
 26     //检查省份  
 27     if(checkProvince(card) === false)  
 28     {  
 29         alert(‘您输入的身份证号码不正确,请重新输入‘);  
 30         document.getElementById(‘card_no‘).focus;  
 31         return false;  
 32     }  
 33     //校验生日  
 34     if(checkBirthday(card) === false)  
 35     {  
 36         alert(‘您输入的身份证号码生日不正确,请重新输入‘);  
 37         document.getElementById(‘card_no‘).focus();  
 38         return false;  
 39     }  
 40     //检验位的检测  
 41     if(checkParity(card) === false)  
 42     {  
 43         alert(‘您的身份证校验位不正确,请重新输入‘);  
 44         document.getElementById(‘card_no‘).focus();  
 45         return false;  
 46     }  
 47     alert(‘OK‘);  
 48     return true;  
 49 };  
 50   
 51   
 52 //检查号码是否符合规范，包括长度，类型  
 53 isCardNo = function(card)  
 54 {  
 55     //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  
 56     var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/;  
 57     if(reg.test(card) === false)  
 58     {  
 59         return false;  
 60     }  
 61   
 62     return true;  
 63 };  
 64   
 65 //取身份证前两位,校验省份  
 66 checkProvince = function(card)  
 67 {  
 68     var province = card.substr(0,2);  
 69     if(vcity[province] == undefined)  
 70     {  
 71         return false;  
 72     }  
 73     return true;  
 74 };  
 75   
 76 //检查生日是否正确  
 77 checkBirthday = function(card)  
 78 {  
 79     var len = card.length;  
 80     //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  
 81     if(len == ‘15‘)  
 82     {  
 83         var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;   
 84         var arr_data = card.match(re_fifteen);  
 85         var year = arr_data[2];  
 86         var month = arr_data[3];  
 87         var day = arr_data[4];  
 88         var birthday = new Date(‘19‘+year+‘/‘+month+‘/‘+day);  
 89         return verifyBirthday(‘19‘+year,month,day,birthday);  
 90     }  
 91     //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X  
 92     if(len == ‘18‘)  
 93     {  
 94         var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/;  
 95         var arr_data = card.match(re_eighteen);  
 96         var year = arr_data[2];  
 97         var month = arr_data[3];  
 98         var day = arr_data[4];  
 99         var birthday = new Date(year+‘/‘+month+‘/‘+day);  
100         return verifyBirthday(year,month,day,birthday);  
101     }  
102     return false;  
103 };  
104   
105 //校验日期  
106 verifyBirthday = function(year,month,day,birthday)  
107 {  
108     var now = new Date();  
109     var now_year = now.getFullYear();  
110     //年月日是否合理  
111     if(birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day)  
112     {  
113         //判断年份的范围（3岁到100岁之间)  
114         var time = now_year - year;  
115         if(time >= 3 && time <= 100)  
116         {  
117             return true;  
118         }  
119         return false;  
120     }  
121     return false;  
122 };  
123   
124 //校验位的检测  
125 checkParity = function(card)  
126 {  
127     //15位转18位  
128     card = changeFivteenToEighteen(card);  
129     var len = card.length;  
130     if(len == ‘18‘)  
131     {  
132         var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);   
133         var arrCh = new Array(‘1‘, ‘0‘, ‘X‘, ‘9‘, ‘8‘, ‘7‘, ‘6‘, ‘5‘, ‘4‘, ‘3‘, ‘2‘);   
134         var cardTemp = 0, i, valnum;   
135         for(i = 0; i < 17; i ++)   
136         {   
137             cardTemp += card.substr(i, 1) * arrInt[i];   
138         }   
139         valnum = arrCh[cardTemp % 11];   
140         if (valnum == card.substr(17, 1))   
141         {  
142             return true;  
143         }  
144         return false;  
145     }  
146     return false;  
147 };  
148   
149 //15位转18位身份证号  
150 changeFivteenToEighteen = function(card)  
151 {  
152     if(card.length == ‘15‘)  
153     {  
154         var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);   
155         var arrCh = new Array(‘1‘, ‘0‘, ‘X‘, ‘9‘, ‘8‘, ‘7‘, ‘6‘, ‘5‘, ‘4‘, ‘3‘, ‘2‘);   
156         var cardTemp = 0, i;     
157         card = card.substr(0, 6) + ‘19‘ + card.substr(6, card.length - 6);  
158         for(i = 0; i < 17; i ++)   
159         {   
160             cardTemp += card.substr(i, 1) * arrInt[i];   
161         }   
162         card += arrCh[cardTemp % 11];   
163         return card;  
164     }  
165     return card;  
166 };   

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
<html>  
  
<head>  
  
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">  
  
<title>Check card no</title>  
  
<script type=‘text/javascript‘ src=‘card.js‘></script>  
  
</head>  
  
<body>  
  
请输入身份证号码：  
  
<input name=‘card_no‘ type=‘text‘ id=‘card_no‘ value=‘‘ />  
  
<input type=‘button‘ name=‘submit‘ value=‘click me‘ onclick=‘javascript:checkCard();‘ />  
  
</body>  
  
</html>