inc-validation/build/index.js

Iran National Code Validation

"use strict";

var hasCode = function hasCode(code) {
    return !code || !code.length ? true : false;
};

var isValid = function isValid(code) {
    if (hasCode(code)) return false;

    var c = parseInt(code.charAt(9));

    var n = parseInt(code.charAt(0)) * 10 + parseInt(code.charAt(1)) * 9 + parseInt(code.charAt(2)) * 8 + parseInt(code.charAt(3)) * 7 + parseInt(code.charAt(4)) * 6 + parseInt(code.charAt(5)) * 5 + parseInt(code.charAt(6)) * 4 + parseInt(code.charAt(7)) * 3 + parseInt(code.charAt(8)) * 2;

    var r = n - parseInt((n / 11).toString()) * 11;

    if (r == 0 && r == c || r == 1 && c == 1 || r > 1 && c == 11 - r) {
        return true;
    }
    return false;
};

module.exports = {
    isValid: isValid
};