1、銀行卡卡號校驗方法。
function luhnCheck(bankno) {
var lastNum = bankno.substr(bankno.length - 1, 1); //取出最后一位（與luhn進行比較）
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位倒序存進數組
newArr.push(first15Num.substr(i, 1));
}
var arrJiShu = new Array(); //奇數位*2的積 <9
var arrJiShu2 = new Array(); //奇數位*2的積 >9
var arrOuShu = new Array(); //偶數位數組
for (var j = 0; j < newArr.length; j++) {
if ((j + 1) % 2 == 1) { //奇數位
if (parseInt(newArr[j]) * 2 < 9) arrJiShu.push(parseInt(newArr[j]) * 2);
else arrJiShu2.push(parseInt(newArr[j]) * 2);
} else //偶數位
arrOuShu.push(newArr[j]);
}
var jishu_child1 = new Array(); //奇數位*2 >9 的分割之后的數組個位數
var jishu_child2 = new Array(); //奇數位*2 >9 的分割之后的數組十位數
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; //奇數位*2 < 9 的數組之和
var sumOuShu = 0; //偶數位數組之和
var sumJiShuChild1 = 0; //奇數位*2 >9 的分割之后的數組個位數之和
var sumJiShuChild2 = 0; //奇數位*2 >9 的分割之后的數組十位數之和
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]);
}
//計算總和
sumTotal = parseInt(sumJiShu) + parseInt(sumOuShu) + parseInt(sumJiShuChild1) + parseInt(sumJiShuChild2);
//計算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、身份證號校驗
var Wi = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 ]; // 加權因子
var ValideCode = [ 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2 ]; // 身份證驗證位值.10代表X
function IdCardValidate(idCard) {
idCard = trim(idCard.replace(/ /g, "")); //去掉字符串頭尾空格
if (idCard.length == 15) {
return isValidityBrithBy15IdCard(idCard); //進行15位身份證的驗證
} else if (idCard.length == 18) {
var a_idCard = idCard.split(""); // 得到身份證數組
if(isValidityBrithBy18IdCard(idCard)&&isTrueValidateCodeBy18IdCard(a_idCard)){ //進行18位身份證的基本驗證和第18位的驗證
return true;
}else {
return false;
}
} else {
return false;
}
}
/**
* 判斷身份證號碼為18位時最后的驗證位是否正確
* @param a_idCard 身份證號碼數組
* @return
*/
function isTrueValidateCodeBy18IdCard(a_idCard) {
var sum = 0; // 聲明加權求和變量
if (a_idCard[17].toLowerCase() == 'x') {
a_idCard[17] = 10; // 將最后位為x的驗證碼替換為10方便后續操作
}
for ( var i = 0; i < 17; i++) {
sum += Wi[i] * a_idCard[i]; // 加權求和
}
valCodePosition = sum % 11; // 得到驗證碼所位置
if (a_idCard[17] == ValideCode[valCodePosition]) {
return true;
} else {
return false;
}
}
/**
* 驗證18位數身份證號碼中的生日是否是有效生日
* @param idCard 18位書身份證字符串
* @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));
// 這里用getFullYear()獲取年份，避免千年蟲問題
if(temp_date.getFullYear()!=parseFloat(year)
||temp_date.getMonth()!=parseFloat(month)-1
||temp_date.getDate()!=parseFloat(day)){
return false;
}else{
return true;
}
}
/**
* 驗證15位數身份證號碼中的生日是否是有效生日
* @param idCard15 15位書身份證字符串
* @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));
// 對於老身份證中的你年齡則不需考慮千年蟲問題而使用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;
}
}
//去掉字符串頭尾空格
function trim(str) {
return str.replace(/(^\s*)|(\s*$)/g, "");
}
ES6版校驗方法
1、銀行卡校驗
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、身份證號校驗
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(''); // 得到身份證數組
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));
// 這里用getFullYear()獲取年份，避免千年蟲問題
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, '');
}
}