albert/taj-validator
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skidoodle 2023-10-25 23:25:13 +02:00
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function validateTAJ(taj) {
taj = taj.replace(/[^0-9]/g, '');
if (taj.length != 9) {
return false;
}
let sum = 0;
let num = '';
for (let i = 0; i < taj.length; i++) {
if (i < 8) {
sum += i % 2 == 0 ? parseInt(taj[i]) * 7 : parseInt(taj[i]) * 3;
num += taj[i];
}
}
num += sum % 10;
return taj == num;
}
function checkTAJ() {
const tajInput = document.querySelector('#taj');
const resultElement = document.querySelector('#result');
const taj = tajInput.value;
if (validateTAJ(taj)) {
resultElement.textContent = 'A TAJ szám érvényes.';
resultElement.style.color = '#4CAF50';
} else {
resultElement.textContent = 'A TAJ szám érvénytelen.';
resultElement.style.color = '#FF5733';
}
}