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 };
html：
<!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>
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时间： 2024-10-20 09:43:10