前端JS校验银行卡卡号和身份证号码（附ES6版方法）

1、银行卡卡号校验方法。

function luhnCheck(bankno) { var lastNum = bankno.substr(bankno.length – 1, 1); //取出最后一位（与luhn进行比较） var first15Num = bankno.substr(0, bankno.length – 1); //前15或18位 var newArr = new Array(); for (var i = first15Num.length – 1; i > -1; i–) { //前15或18位倒序存进数组 newArr.push(first15Num.substr(i, 1)); } var arrJiShu = new Array(); //奇数位*2的积 <9 var arrJiShu2 = new Array(); //奇数位*2的积 >9 var arrOuShu = new Array(); //偶数位数组 for (var j = 0; j < newArr.length; j++) { if ((j + 1) % 2 == 1) { //奇数位 if (parseInt(newArr[j]) * 2 < 9) arrJiShu.push(parseInt(newArr[j]) * 2); else arrJiShu2.push(parseInt(newArr[j]) * 2); } else //偶数位 arrOuShu.push(newArr[j]); }
var jishu_child1 = new Array(); //奇数位*2 >9 的分割之后的数组个位数 var jishu_child2 = new Array(); //奇数位*2 >9 的分割之后的数组十位数 for (var h = 0; h < arrJiShu2.length; h++) { jishu_child1.push(parseInt(arrJiShu2[h]) % 10); jishu_child2.push(parseInt(arrJiShu2[h]) / 10); }
var sumJiShu = 0; //奇数位*2 < 9 的数组之和 var sumOuShu = 0; //偶数位数组之和 var sumJiShuChild1 = 0; //奇数位*2 >9 的分割之后的数组个位数之和 var sumJiShuChild2 = 0; //奇数位*2 >9 的分割之后的数组十位数之和 var sumTotal = 0; for (var m = 0; m < arrJiShu.length; m++) { sumJiShu = sumJiShu + parseInt(arrJiShu[m]); }
for (var n = 0; n < arrOuShu.length; n++) { sumOuShu = sumOuShu + parseInt(arrOuShu[n]); }
for (var p = 0; p < jishu_child1.length; p++) { sumJiShuChild1 = sumJiShuChild1 + parseInt(jishu_child1[p]); sumJiShuChild2 = sumJiShuChild2 + parseInt(jishu_child2[p]); } //计算总和 sumTotal = parseInt(sumJiShu) + parseInt(sumOuShu) + parseInt(sumJiShuChild1) + parseInt(sumJiShuChild2);
//计算luhn值 var k = parseInt(sumTotal) % 10 == 0 ? 10 : parseInt(sumTotal) % 10; var luhn = 10 – k;
if (lastNum == luhn) { return true; } else { return false; } } 2、身份证号校验 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 IdCardValidate(idCard) { idCard = trim(idCard.replace(/ /g, "")); //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, ""); } ES6版校验方法 1、银行卡校验 export function bankCardValidate(bankno) { const lastNum = +bankno.substr(bankno.length – 1, 1); const first15Num = bankno.substr(0, bankno.length – 1); const newArr = []; for (let i = first15Num.length – 1; i > -1; i -= 1) { newArr.push(first15Num.substr(i, 1)); } const arrJiShu = []; const arrJiShu2 = []; const arrOuShu = []; for (let j = 0; j < newArr.length; j += 1) { if ((j + 1) % 2 === 1) { if (parseInt(newArr[j], 10) * 2 < 9) { arrJiShu.push(parseInt(newArr[j], 10) * 2); } else { arrJiShu2.push(parseInt(newArr[j], 10) * 2); } } else { arrOuShu.push(newArr[j]); } }
const jishuChild1 = []; const jishuChild2 = []; for (let h = 0; h < arrJiShu2.length; h += 1) { jishuChild1.push(parseInt(arrJiShu2[h], 10) % 10); jishuChild2.push(parseInt(arrJiShu2[h], 10) / 10); }
let sumJiShu = 0; let sumOuShu = 0; let sumJiShuChild1 = 0; let sumJiShuChild2 = 0; let sumTotal = 0; for (let m = 0; m < arrJiShu.length; m += 1) { sumJiShu += parseInt(arrJiShu[m], 10); }
for (let n = 0; n < arrOuShu.length; n += 1) { sumOuShu += parseInt(arrOuShu[n], 10); }
for (let p = 0; p < jishuChild1.length; p += 1) { sumJiShuChild1 += parseInt(jishuChild1[p], 10); sumJiShuChild2 += parseInt(jishuChild2[p], 10); } sumTotal = parseInt(sumJiShu, 10) + parseInt(sumOuShu, 10) + parseInt(sumJiShuChild1, 10) + parseInt(sumJiShuChild2, 10); const k = parseInt(sumTotal, 10) % 10 === 0 ? 10 : parseInt(sumTotal, 10) % 10; const luhn = 10 – k; if (lastNum === luhn) { return true; } else { return false; } } 2、身份证号校验 export function IdCardValidate(idCard) { const idCards = trim(idCard.replace(/ /g, '')); if (idCard.length === 15) { return isValidityBrithBy15IdCard(idCards); } else if (idCards.length === 18) { const idCardS = idCards.split(''); // 得到身份证数组 if (isValidityBrithBy18IdCard(idCards) && isTrueValidateCodeBy18IdCard(idCardS)) { return true; } else { return false; } } else { return false; }
function isTrueValidateCodeBy18IdCard(aIdCard) { const Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1]; const ValideCode = ['1', '0', '10', '9', '8', '7', '6', '5', '4', '3', '2']; let sum = 0; const AidCard = aIdCard; if (AidCard[17].toLowerCase() === 'x') { AidCard[17] = '10'; } for (let i = 0; i < 17; i += 1) { sum += Wi[i] * AidCard[i]; } const valCodePosition = sum % 11; if (AidCard[17] === ValideCode[valCodePosition]) { return true; } else { return false; } }
function isValidityBrithBy18IdCard(idCard18) { const year = idCard18.substring(6, 10); const month = idCard18.substring(10, 12); const day = idCard18.substring(12, 14); const tempDate = new Date(year, parseFloat(month) – 1, parseFloat(day)); // 这里用getFullYear()获取年份，避免千年虫问题 if (tempDate.getFullYear() !== parseFloat(year) || tempDate.getMonth() !== parseFloat(month) – 1 || tempDate.getDate() !== parseFloat(day)) { return false; } else { return true; } }
function isValidityBrithBy15IdCard(idCard15) { const year = idCard15.substring(6, 8); const month = idCard15.substring(8, 10); const day = idCard15.substring(10, 12); const tempDate = new Date(year, parseFloat(month) – 1, parseFloat(day)); if (tempDate.getYear() !== parseFloat(year) || tempDate.getMonth() !== parseFloat(month) – 1 || tempDate.getDate() !== parseFloat(day)) { return false; } else { return true; } } function trim(str) { return str.replace(/(^\s*)|(\s*$)/g, ''); } }