基于JS的身份证验证（完整版）

var Wi = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 ]; ???// 加权因子 ??var ValideCode = [ 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2 ]; ???????????// 身份证验证位值.10代表X ??function checkIdcard(idCard) { ????idCard = trim(idCard);//去掉字符串头尾空格 ????????????????????????if (idCard.length == 15) { ??????????return isValidityBrithBy15IdCard(idCard); ??????//进行15位身份证的验证 ???????} else if (idCard.length == 18) { ??????????var a_idCard = idCard.split(""); ???????????????// 得到身份证数组 ??????????if(isValidityBrithBy18IdCard(idCard)&&isTrueValidateCodeBy18IdCard(a_idCard)){ ??//进行18位身份证的基本验证和第18位的验证 ???????????return true; ??????????}else { ??????????????return false; ??????????} ??????} else { ??????????return false; ??????} ??} ??/** ??* 判断身份证号码为18位时最后的验证位是否正确 ??* @param a_idCard 身份证号码数组 ??* @return ??*/ ?function isTrueValidateCodeBy18IdCard(a_idCard) { ??????var sum = 0; ????????????????????????????// 声明加权求和变量 ??????if (a_idCard[17].toLowerCase() == ‘x‘) { ??????????a_idCard[17] = 10; ???????????????????// 将最后位为x的验证码替换为10方便后续操作 ??????} ??????for ( var i = 0; i < 17; i++) { ??????????sum += Wi[i] * a_idCard[i]; ???????????// 加权求和 ??????} ??????valCodePosition = sum % 11; ???????????????// 得到验证码所位置 ??????if (a_idCard[17] == ValideCode[valCodePosition]) { ??????????return true; ??????} else { ??????????return false; ??????} ??} ??/** ???* 验证18位数身份证号码中的生日是否是有效生日 ???* @param idCard 18位书身份证字符串 ???* @return ???*/ ?function isValidityBrithBy18IdCard(idCard18){ ??????var year = ?idCard18.substring(6,10); ??????var month = idCard18.substring(10,12); ??????var day = idCard18.substring(12,14); ??????var temp_date = new Date(year,parseFloat(month)-1,parseFloat(day)); ??????// 这里用getFullYear()获取年份，避免千年虫问题 ??????if(temp_date.getFullYear()!=parseFloat(year) ????????????||temp_date.getMonth()!=parseFloat(month)-1 ????????????||temp_date.getDate()!=parseFloat(day)){ ??????????????return false; ??????}else{ ??????????return true; ??????} ??} ????/** ????* 验证15位数身份证号码中的生日是否是有效生日 ????* @param idCard15 15位书身份证字符串 ????* @return ????*/ ???function isValidityBrithBy15IdCard(idCard15){ ????????var year = ?idCard15.substring(6,8); ????????var month = idCard15.substring(8,10); ????????var day = idCard15.substring(10,12); ????????var temp_date = new Date(year,parseFloat(month)-1,parseFloat(day)); ????????// 对于老身份证中的你年龄则不需考虑千年虫问题而使用getYear()方法 ????????if(temp_date.getYear()!=parseFloat(year) ????????????????||temp_date.getMonth()!=parseFloat(month)-1 ????????????????||temp_date.getDate()!=parseFloat(day)){ ??????????????????return false; ??????????}else{ ??????????????return true; ??????????} ????} ??//去掉字符串头尾空格 ??function trim(str) { ??????return str.replace(/(^\s*)|(\s*$)/g, ""); ??}