<!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'> /*Author:yufulongBlog:http://www.xiaoxiaozi.com*/ 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" }; checktheform = 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'); document.getElementById('card_no').focus; return false; } //校验长度，类型 if (isCardNo(card) === false) {//直接改变文本框后面的提示信息，而不是使用alert()弹窗 document.getElementById('sfz').innerHTML = '您输入的身份证号码不正确,请重新输入'; document.getElementById('card_no').focus; 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'); document.getElementById('card_no').focus; 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'); document.getElementById('card_no').focus(); 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'); document.getElementById('card_no').focus(); return false; } alert('OK'); return true; }; //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 (vcity[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})$/; var arr_data = card.match(re_fifteen); var year = arr_data[2]; var month = arr_data[3]; var day = arr_data[4]; var birthday = new Date('19' + year + '/' + month + '/' + day); return verifyBirthday('19' + year, month, day, birthday); } //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X if (len == '18') { var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/; var arr_data = card.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 >= 3 && time <= 100) { return true; } return false; } return false; }; //校验位的检测 checkParity = function(card) { //15位转18位 card = changeFivteenToEighteen(card); var len = card.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 += card.substr(i, 1) * arrInt[i]; } valnum = arrCh[cardTemp % 11]; if (valnum == card.substr(17, 1)) { return true; } return false; } return false; }; //15位转18位身份证号 changeFivteenToEighteen = function(card) { if (card.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; card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6); for (i = 0; i < 17; i++) { cardTemp += card.substr(i, 1) * arrInt[i]; } card += arrCh[cardTemp % 11]; return card; } return card; }; </script> </head> <body> <form name="form1" method="post" action=""> <label> 身份证号<input name='card_no' type='text' id='card_no' onBlur='javascript:checktheform();'/><em id="sfz">请输入正确的身份证号码</em> </label><br/> <label> <input type="submit" name="Submit" value="提交"> </label> </form> </body></html>
